#define _USE_MATH_DEFINES
#include<iostream>
#include<vector>
#include<algorithm>
#include<cmath>
#include<string>
#include<iomanip>
#include<numeric>
#include<queue>
#include<deque>
#include<stack>
#include<set>
#include<map>
#include<random>
using namespace std;
typedef long long ll;
const int mod=998244353;
int main(){
	ll n;
	cin>>n;
	ll ans=1;
	for(ll i=2;i*i<=n;i++){
		int sum=1,tmp=1;
		while(n%i==0){
			n/=i;
			tmp*=i;
			sum+=tmp;
		}
		ans*=sum;
	}
	if(n!=1)
		ans*=(n+1);
	cout<<ans<<endl;
}