prfNumber.java

import java.util.Scanner;

public class prfNumber {
 public static void main(String[] args) {
 int num;
 Scanner inp = new Scanner(System.in);
 System.out.println("Enter a num:");
 num = inp.nextInt();

 int total = 0;
 for (int i = 1; i < num; i++) {
 if(num == 1){
 System.out.println("it isn't perfect number!");
 break;
 }
 if(num % i == 0){
 total += i;
 }

 }
 
 if(total == num){
 System.out.println("it is perfect num!");
 }else
 System.out.println("it is not perfect num!");
 
 inp.close();
 
 }
}