using System;

public class Program

{

    public static void Main(string [] args)

    {

        int n=int.Parse(Console.ReadLine());

        int i;

        int sum=0;

        for(i=1;i<n;i++)

        {

            if(n%i==0)

            {

                sum+=i;

            }

            Console.Write("{0} ",i);

        }

        if(sum==n)

        Console.Write("Number is perfect");

        else

        Console.Write("Not a perfect no");

    }

}