#include<iostream>
#include<iomanip>
#include<math.h>
#include<vector>
#include<algorithm>
#include<string>
#include<queue>
#include<stack>
#include<set>
#include<map>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> P;
typedef long double ld;

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