#include<iostream>
#include<vector>
using namespace std;
using ll=long long;

int main(){
  ll n,k;cin>>n>>k;
  ll ans=0;
  for(ll i=1;i*i<=k;i++){
    ll tmpa,tmpb;
    if(k%i==0){
      if(i<=n)tmpa=i-1;
      else tmpa=max(0ll,2*n-i+1);
      if(k/i<=n)tmpb=k/i-1;
      else tmpb=max(0ll,2*n-(k/i)+1);
      if(tmpa==tmpb&&i==k/i)ans+=tmpa*tmpb;
      else ans+=2ll*tmpa*tmpb;
    }
  }
  cout<<ans<<endl;
}