/* -*- coding: utf-8 -*-
 *
 * 2417.cc:  No.2417 Div Count - yukicoder
 */

#include<cstdio>
#include<algorithm>
 
using namespace std;

/* constant */

/* typedef */

typedef long long ll;

/* global variables */

/* subroutines */

/* main */

int main() {
  ll n, k;
  scanf("%lld%lld", &n, &k);
  n -= k;

  int c = 0;
  for (ll p = 1; p * p <= n; p++)
    if (n % p == 0) {
      ll q = n / p;
      if (p > k) c++;
      if (q != p && q > k) c++;
    }

  printf("%d\n", c);
  return 0;
}