MyCalculator.java

import java.util.Scanner;

interface AdvanceArithmetic{
     int divi_sum(int n);

}
public class MyCalculator implements AdvanceArithmetic {


    public int divi_sum(int n) {
        int sum = 0;

        for (int i = 1; i <= n; i++) {
            int rem = n % i;
            if (rem == 0) {
                sum = sum + i;
            }
        }
        return sum;
    }


    public static void main(String[] args) {
        MyCalculator obj = new MyCalculator();
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int sum = obj.divi_sum(n);
        System.out.println(sum);
    }
}