#pragma GCC target("avx2")
#pragma GCC target("bmi2")
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

map<ll, int> prime_factor(ll N){
    map<ll, int> res;
    for (int p = 2; p*p <= N; p++){
        while (N%p == 0){
            N /= p;
            res[p]++;
        }
    }
    if (N > 1) res[N]++;
    return res;
}

int main(){
    ll N;
    cin >> N;
    auto P = prime_factor(N);

    ll ans = 1;
    for (auto [k, v] : P){
        ll sm = 1, pw = 1;
        for (int i = 0; i < v; i++){
            pw *= k;
            sm += pw;
        }
        ans *= sm;
    }

    cout << ans << endl;
}