using System;

​

public class Program

{

    public static void Main()

    {

        int i = 1;

        int triangle = 0;

        while (true)

        {

            triangle = triangle + i;

            int counter = 0;

            for (int divisor = 1; divisor < triangle; divisor++)

            {

                if (triangle % divisor == 0)

                {

                    counter++;

                }

            }

​

            i++;

            if (counter == 501)

                break;

        }

    }

}