using static System.Math;
using System.Collections.Generic;
using System;

public class Hello
{
    static void Main()
    {
        string[] line = Console.ReadLine().Trim().Split(' ');
        var n = long.Parse(line[0]);
        var k = long.Parse(line[1]);
        getAns(n, k);
    }
    static void getAns(long n, long k)
    {
        var c = getDiv(n - k);
        var ans = 0;
        foreach (var x in c)
            if (n % x == k) ans++;
        Console.WriteLine(ans);
    }
    public static List<long> getDiv(long n)
    {
        var ans = new List<long>();
        for (int i = 1; i <= Sqrt(n); i++)
        {
            if (n % i == 0)
            {
                ans.Add(i);
                if (n != i * i) ans.Add(n / i);
            }
        }
        return ans;
    }
}