#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
  int a,b;
  cin>>a>>b;
  int ans = 0;
  a -= b;
  vector<int> S = {};
  for(int i=1;i*i<=a;i++){
  	if(a%i == 0){
  		S.push_back(i);
  		if(i*i != a) S.push_back(a/i);
  	}
  }
  for(int x:S)if(x > b) ans++;
  cout<<ans<<endl;
}