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

int main()
{
	long long N;
	cin >> N;

	long long ans = 0;
	for( int x = 1; x * x <= N; x++ ) {
		if( N % x ) continue;
		ans++;
		if( N / x != x ) ans++;
	}

	cout << ans << endl;
}