#include<iostream>
#include<vector>
using namespace std;
int main() {
	int n;
	int sum = 0, re = 0;
	cin >>n;
	vector<int> a(n);
	for (int i=1; i <= n; i++) {
		if (n % i == 0)	a[i] = i;
		sum += a[i];
	}
	re = sum / n;
	cout << sum / re << endl;
	return 0;
}