func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long mod = (long long)(1e9 + 7);   const long long inv = (long long)(5e8 + 4);   int main() {     long long n, m;     cin >> n >> m;     long long ans = (n % mod) * (m % mod) % mod;     long long l = 1, r = 1;     while (l <= min(n, m)) {       long long a = n / l;       r = min(m, n / a);       long long x1, x2, x3, x4;       x1 = (n / r) % mod;       x2 = (l + r) % mod;       x3 = (x1 * x2) % mod;       x4 = (r - l + 1) % mod;       long long temp = ((x3 * x4) % mod) * inv % mod;       ans = ((ans + mod) - temp) % mod;       l = r + 1;     }     cout << ans << endl;     return 0;   }   