using System;

public class Program

{

    public static void Main()

    {

        for(int i = 1; i < 5000; i++)

        {

            int div = 0;

            Console.Write(i + ":     ");

            for(int j = 1; j <= i; j++)

            {

                if(i % j == 0)

                {

                    div++;

                    Console.Write(j + ", ");

                }   

            }

            Console.Write("                   ( " + div + " )\n");

        }

    }

}