Write a program to input a number and check whether it is Perfect Number or not?(6=factor=1,2,3 =1+2+3=6 , sum=number)

30)  Write a program to input a number and check whether it is Perfect Number or not?(6=factor=1,2,3 =1+2+3=6 , sum=number)

import java.util.*;

public class perfect_number

{

    public static void main(String args[ ])

    {

        Scanner sc = new Scanner (System.in);

        System.out.println("Enter a number");

        int a = sc.nextInt();

        int c = 0;

        for(int i=1;i<a;i++)

        {

            if(a%i==0)

            c=c+i;

        }

        if(c==a)

        {

            System.out.println("Entered number is a PERFECT number");

        }

        else

        {

            System.out.println("Entered number is not a PERFECT number");

        }

    }

}