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package PerfectNumberChecker;

import java.util.Scanner;

/**

* @author Fatih ARI - 20.08.2021

*

* A program is designed to print whether a number is a perfect number or not.

*

* A number whose sum of positive integer factors are equal to itself, excluding the number itself, is called a perfect number.

*

*/

public class test {

public static void main(String[] args) {

Scanner input = new Scanner(System.in);

System.out.print("Enter a number: ");

int number = input.nextInt();

input.close();

int total = 0;

for (int i = 1; i < number; i++)

{

if(number % i == 0)

total += i;

}

if(total==number)

System.out.println("YES! \"" + number + "\" is a perfect number.\n");

else

System.out.println("NO! \"" + number + "\" is NOT a perfect number.\n");

}

}