#include <iostream>
using namespace std;

long long n;

int main() {
	cin >> n;
	
	int ans = 0;
	for (long long i = 1; i * i <= n; i++) {
		if (n % i == 0) {
			ans += 1 + (i * i < n);
		}
	}
	cout << ans << endl;
	return 0;
}