#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define N 100000
ll sum(ll n){
    ll ans=1;
    for(int i=2;i*i<=n;i++){
            if (n%i==0) {
            ll sum=1;
            ll k=1;
            while (n%i==0) {
                n/=i;
                k*=i;
                sum+=k;
            }
            ans*=sum;
        }
    }
    if(n>1){
        ans*=(1+n);
    }
    return ans;
}
int main(){
	//freopen("stdin.inp","r",stdin);
	//freopen("stdout.out","w",stdout);

	//Your code here
    ll n;
    cin>>n;
    cout<<sum(n)<<endl;

	return 0;
}