func_code_string: #include <bits/stdc++.h>   using namespace std;   inline long long sum(long long x) {     x %= 1000000007;     return (1LL * x * (x + 1) / 2) % 1000000007;   }   int main() {     long long n, m;     ios::sync_with_stdio(false);     cin >> n >> m;     long long ans = ((n % 1000000007) * (m % 1000000007)) % 1000000007;     int rad = sqrt(n);     for (int i = 1; i <= n / (rad + 1) && i <= m; i++) {       ans -= (1LL * i * (n / i)) % 1000000007;       if (ans < 0) ans += 1000000007;     }     for (int i = 1; i <= rad; i++) {       ans -= (1LL * i *               (sum(min(n / i, m)) - sum(min(n / (i + 1), m)) + 1000000007)) %              1000000007;       if (ans < 0) ans += 1000000007;     }     cout << ans;     return 0;   }   