/*by SilverN*/

 #include<algorithm>

 #include<iostream>

 #include<cstring>

 #include<cstdio>

 #include<cmath>

 using namespace std;

 long long n,m,k;

 int main(){

     while(scanf("%lld%lld",&n,&k)!=EOF){

         int i,j;

         long long ans=;

         for(i=;i<=n;i=m+){

             m=k/i;

             if(!m)m=n;

             else m=min(k/m,n);

             ans+=(k%i+k%m)*(m-i+)/;

         }

         printf("%lld\n",ans);

     }

     return ;

 }