#include <iostream>

using namespace std;

typedef long long ll;

int main(){
    ll N;
    cin >> N;
    ll n = N;
    ll ans = 1;
    for(ll i = 2; i*i <= N; i++){
        ll sum = 1;
        ll tmp = 1;
        while(n%i == 0){
            n /= i;
            tmp *= i;
            sum += tmp;
        }
       // cout << sum << ' ';
        ans *= sum;
    }
    if(n != 1) ans *= (n+1);
    cout << ans << endl;
}