static void Main(string[] args)
        {
            int number = 0, total=0, aux;
            while (!(number>0))
            {
                Console.Write("ENTER A NUMBER >1 AND I'LL TELL YOU IF IT IS A PERFECT NUMBER --> ");
                number = Convert.ToInt32(Console.ReadLine());
            }
            for (int i = number; i > 1; i--)
            {
                if (number % i == 0)
                {
                    aux = number / i;
                    total += aux;
                }
            }
            if (total==number)
                Console.WriteLine("{0} IS A PERFECT NUMBER", number);
            else
                Console.WriteLine("{0} IS NOT A PERFECT NUMBER", number);
        }
    }
}