Deficient Number – SchoolCodeHub

Deficient Number is a number whose sum of proper factors is less than the number itself.

Example 1: 15. Sum of proper factors = 1+3+5 = 9<15. Hence it is a Deficient Number.

Example 2: 18. Sun of proper factors = 1+2+3+6+9 = 21. Hence it is not a Deficient Number.

Java

import java.util.*;
public class DeficientNumber
{
    public static void main(String args[])
    {
        int n=0,sum=0;
        Scanner sc=new Scanner(System.in);
        System.out.print("Enter a number: ");
        n=sc.nextInt();
        for(int i=1;i<n;i++)
        {
            if(n%i==0)
            {
                sum=sum+i;
            }
        }
        if(sum<n)
        {
            System.out.println(n+" is an Deficient Number");
        }
        else
        {
            System.out.println(n+" is not an Deficient Number");
        }
    }
}

Java