for (long x = 1; x < 1000000000; x++) {

            bool dividable = true;

            for (int y = 20; y > 0; y--) {
                if (x % y != 0) {
                    dividable = false;
                }

            }
            if (dividable == true) {
                Console.WriteLine (x);
            }
        }
    }