#include <bits/stdc++.h>
using namespace std;

int main() {
    int64_t n, ans = 0;
    cin >> n;
    for (int64_t i = 1; i * i <= n; i++) {
        if (n % i) continue;
        if (i * i == n) {
            ans++;
        } else {
            ans += 2;
        }
    }
    cout << ans << endl;
}