using System;
using System.Linq;
using System.Collections.Generic;

class No537
{
    static void Main()
    {
        var num = Int32.Parse(Console.ReadLine());
        var numI = num / 2;
        var list = new List<int>();
        var count = 0;
        var sameCount = 0;
        for (int i = 1; i < numI; ++i)
        {
            if (num % i==0)
            {
                if (!list.Contains(i)) list.Add(i);
                else break;
            }
        }
        Console.WriteLine(list.Count);
    }
}