#include <bits/stdc++.h>
using namespace std;

int main() {
  int Ans = 0;
  long long N, K; cin >> N >> K;
  long long M = N - K;

  for (long long i = 1; i * i <= M; i++) {
    if (M % i == 0 && N % i == K) Ans++;
    if (M % i == 0 && N % (M / i) == K && i != (M / i)) Ans++;
  }

  cout << Ans << endl;
}