#include <stdio.h>

int main(void){
  long i;

  long n,k;
  scanf("%ld%ld", &n, &k);

  long ans=0,sum;
  for(i=2;i*i<=k&&i<=2*n;i++){
    sum=1;
    if(k%i==0&&k/i<=2*n){
      if(i<=n+1){
        sum*=i-1;
      }else{
        sum*=2*n-i+1;
      }
      if(k/i<=n+1){
        sum*=k/i-1;
      }else{
        sum*=2*n-k/i+1;
      }
      if(i!=k/i) sum*=2;
      ans+=sum;
      //printf("%ld %ld\n", i, sum);
    }
  }

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

  return 0;
}