package main

import (
	"bufio"
	"fmt"
	"os"
)

func main() {
	in := bufio.NewReader(os.Stdin)
	var N, K, ans int

	fmt.Fscan(in, &N, &K)
	val := N - K
	list, m := soinsu(val)

	//fmt.Println(list)
	for i := 0; i < len(list); i++ {
		_, ok := m[val/list[i]]
		if list[i] > K {
			ans++
		}
		if val/list[i] > K && !ok {
			ans++
		}
	}

	fmt.Println(ans)
}

func soinsu(N int) ([]int, map[int]int) {
	list := make([]int, 0)
	m := make(map[int]int)
	for i := 1; i < N; i++ {
		if i*i > N {
			break
		}
		if N%i != 0 {
			continue
		}

		if N%i == 0 {
			list = append(list, i)
			if _, ok := m[i]; ok {
				m[i]++
			} else {
				m[i] = 1
			}
		}
	}

	return list, m
}