Check if a given number is perfect number or not
A perfect number is a number which will have all divisor sum are equal to given number.

Here given code implementation process.
//C Program
//Check if a given number is perfect number or not
#include <stdio.h>
//Check given number is perfect or not
int is_perfect_no(int n)
{
if(n<0)
{
return 0;
}
int sum = 0;
for (int i = (n/2); i>=1 ; i--)
{
if(n % i == 0)
{
sum+=i;
}
}
if(sum==n)
{
return 1;
}
else
{
return 0;
}
}
void perfect_number(int n)
{
if(is_perfect_no(n))
{
printf("Is Perfect Number : %d",n );
}
else
{
printf("Is not a Perfect Number : %d",n );
}
printf("\n");
}
int main()
{
perfect_number(6);
perfect_number(24);
perfect_number(8128);
perfect_number(33550336);
return 0;
}
Output
Is Perfect Number : 6
Is not a Perfect Number : 24
Is Perfect Number : 8128
Is Perfect Number : 33550336
/*
C++ Program
Check if a given number is perfect number or not
*/
#include <iostream>
using namespace std;
class Number {
public:
bool is_perfect_no(int n) {
if (n < 0) {
return false;
}
int sum = 0;
for (int i = (n / 2); i >= 1; i--) {
if (n % i == 0) {
sum += i;
}
}
if (sum == n) {
return true;
} else {
return false;
}
}
void perfect_number(int n) {
if (this->is_perfect_no(n)) {
cout << "Is Perfect Number : " << n << endl;
} else {
cout << "Is not a Perfect Number : " << n << endl;
}
}
};
int main() {
Number obj;
obj.perfect_number(6);
obj.perfect_number(24);
obj.perfect_number(8128);
obj.perfect_number(33550336);
}
Output
Is Perfect Number : 6
Is not a Perfect Number : 24
Is Perfect Number : 8128
Is Perfect Number : 33550336
/*
Java Program
Check if a given number is perfect number or not
*/
public class Number {
//Check given number is perfect or not
public boolean is_perfect_no(int n) {
if (n < 0) {
return false;
}
int sum = 0;
for (int i = (n / 2); i >= 1; i--) {
if (n % i == 0) {
sum += i;
}
}
if (sum == n) {
return true;
} else {
return false;
}
}
void perfect_number(int n) {
if (is_perfect_no(n)) {
System.out.println("Is Perfect Number : " + n);
} else {
System.out.println("Is not a Perfect Number : " + n);
}
}
public static void main(String[] args) {
Number obj = new Number();
obj.perfect_number(6);
obj.perfect_number(24);
obj.perfect_number(8128);
obj.perfect_number(33550336);
}
}
Output
Is Perfect Number : 6
Is not a Perfect Number : 24
Is Perfect Number : 8128
Is Perfect Number : 33550336
#Python3
#Check if a given number is perfect number or not
class Number :
def is_perfect_no(self, n) :
if (n < 0) :
return False
sumValue = 0
i = int(n / 2)
while ( i >= 1 ) :
if (n % i == 0) :
sumValue += i
i -= 1
if (sumValue == n) :
return True
else :
return False
def perfect_number(self, n) :
if (self.is_perfect_no(n)) :
print("Is Perfect Number : ", n)
else :
print("Is not a Perfect Number : ", n)
def main() :
obj = Number()
obj.perfect_number(6)
obj.perfect_number(24)
obj.perfect_number(8128)
obj.perfect_number(33550336)
if __name__ == "__main__":
main()
Output
Is Perfect Number : 6
Is not a Perfect Number : 24
Is Perfect Number : 8128
Is Perfect Number : 33550336
/*
C# Program
Check if a given number is perfect number or not
*/
using System;
public class Number {
//Check given number is perfect or not
public Boolean is_perfect_no(int n) {
if (n < 0) {
return false;
}
int sum = 0;
for (int i = (n / 2); i >= 1; i--) {
if (n % i == 0) {
sum += i;
}
}
if (sum == n) {
return true;
} else {
return false;
}
}
void perfect_number(int n) {
if (is_perfect_no(n)) {
Console.WriteLine("Is Perfect Number : " + n);
} else {
Console.WriteLine("Is not a Perfect Number : " + n);
}
}
public static void Main(String[] args) {
Number obj = new Number();
obj.perfect_number(6);
obj.perfect_number(24);
obj.perfect_number(8128);
obj.perfect_number(33550336);
}
}
Output
Is Perfect Number : 6
Is not a Perfect Number : 24
Is Perfect Number : 8128
Is Perfect Number : 33550336
<?php
/*
Php Program
find Next Sparse Number
*/
class Number {
public function is_perfect_no($n) {
if ($n < 0) {
return false;
}
$sum = 0;
for ($i = intval($n / 2); $i >= 1; $i--) {
if ($n % $i == 0) {
$sum += $i;
}
}
if ($sum == $n) {
return true;
} else {
return false;
}
}
function perfect_number($n) {
if ($this->is_perfect_no($n)) {
echo ("Is Perfect Number : ". $n."\n");
} else {
echo ("Is not a Perfect Number : " . $n."\n");
}
}
}
function main() {
$obj = new Number();
$obj->perfect_number(6);
$obj->perfect_number(24);
$obj->perfect_number(8128);
$obj->perfect_number(33550336);
}
main();
Output
Is Perfect Number : 6
Is not a Perfect Number : 24
Is Perfect Number : 8128
Is Perfect Number : 33550336
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