#include <bits/stdc++.h>

using namespace std;
#define rep(i, n, o) for(int i = o;i < (n);i++)
#define ou(x) cout << x << endl
#define ll long long
#define re return 0

int main(){
    int n, a = 0;
    double b;
    cin >> n;
    rep(i, n + 1, 1){
        if(n % i == 0) {
            a += i;
        }
    }
    b = (double)a / (double)n;
    int c = (double)a / (double)b;
    ou(c);
    re;
}