Giúp mình với ạ giải bằng ngôn ngữ C++

$\color{green}{\texttt{C}}\color{lightgreen}{\texttt{+}}\color{lightgreen}{\texttt{+}}$

#include <iostream> 
#include <cmath>

#define ll long long

using namespace std;

ll n, x, res;

int main() {
  cin >> n >> x;
  
  for (ll i=sqrt(x); i>=1; --i) {
    if (x % i == 0) {
      if (i <= n && x/i <= n) ++ res;
    }
  }

  cout << 2 * res;
}

$\\$
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