package main

import . "fmt"

func main() {
	var n,k int64
	Scan(&n,&k)
	var c int
	n-=k
	for i:=int64(1);i*i<=n;i++ {
		if n%i!=0 {
			continue
		}
		c++ 
		if i!=n/i{
			c++
		}
	}
	Println(c)
}