func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long n, sum = 0;     cin >> n;     sum = n;     for (int i = 2; i <= n; i++) {       while (n % i == 0) {         sum += n / i;         n /= i;       }     }     cout << sum << endl;     return 0;   }   