func_code_string: #include <bits/stdc++.h>   using namespace std;   const int mod = 1e5 + 50;   const int maxn = 1e7 + 50;   const int inf = 0x3f3f3f3f;   unordered_map<int, bool> mp;   vector<int> vec;   int main() {     int T;     scanf( %d , &T);     while (T--) {       mp.clear();       vec.clear();       int n, t;       scanf( %d , &n);       vec.push_back(0);       for (int i = 1; i * i <= n; i++) {         t = n / i;         if (!mp.count(t)) {           mp[t] = 1;           vec.push_back(t);           if (n / t == i) {             if (!mp.count(i)) {               mp[i] = 1;               vec.push_back(i);             }           }         }       }       sort(vec.begin(), vec.end());       printf( %d n , vec.size());       for (int i = 0; i < vec.size(); i++) printf( %d  , vec[i]);       putchar(10);     }   }   