using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static long[] NList => ReadLine().Split().Select(long.Parse).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var c = NList;
        var (n, k) = (c[0], c[1]);
        var ans = 0;
        foreach (var a in Divs(n - k))
        {
            if (n % a == k) ++ans;
        }
        WriteLine(ans);
    }
    static List<long> Divs(long n)
    {
        var list = new List<long>();
        for (var i = 1L; i * i <= n; ++i)
        {
            if (n % i == 0)
            {
                list.Add(i);
                if (i * i < n) list.Add(n / i);
            }
        }
        return list;
    }
}