#include "bits/stdc++.h"

using namespace std;

void solve()
{
    long n;
    cin >> n;
    long ans = 1;
    for (long f = 2; f * f <= n; f++)
    {
        if (n % f != 0)
        {
            continue;
        }
        long res = 1;
        while (n % f == 0)
        {
            n /= f;
            res = res * f + 1;
        }
        ans *= res;
    }
    if (n > 1)
    {
        ans *= n + 1;
    }
    cout << ans << endl;
}

int main()
{
    solve();
    return 0;
}