#include <bits/stdc++.h>   using namespace std;   const int MOD = 1e9 + 7;   const double PI = 3.14159265359;   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     int n;     cin >> n;     vector<int> facts;     for (int i = 1; i * i <= n; i++) {       if (!(n % i)) {         facts.push_back(i);         facts.push_back(n / i);       }     }     vector<long long> ans;     for (int i : facts) {       long long a = (n - 1) / i;       ans.push_back(a * (a + 1) * i / 2 + a + 1);     }     sort(ans.begin(), ans.end());     auto it = unique(ans.begin(), ans.end());     ans.resize(it - ans.begin());     for (auto i : ans) {       cout << i <<    ;     }     return 0;   }   