using System;

public class Program

{

    public static void Main()

    {

        int n=1;

        int m=1;

        int s=0 ;

        while (n<1001)

        {

            while (m<=n/2)

            {

                if (n%m==0)

                {   

                    s=s+m;

                }

                m=m+1 ;

            }

            if (s==n)

                    {

                        Console.WriteLine(s);

            }

            n=n+1 ;

            s=0 ;

            m=1 ;

        }

    }

}