#include<cstdio>
#include <iostream>
#include<algorithm>
#include<string>
#include<queue>
#include<vector>
#include<functional>
#include<cmath>
#include<map>
#include<stack>
#include<set>
#include<numeric>

#define mod 1000000007;

using namespace std;
typedef long long ll;
typedef pair<ll, ll> Pr;

ll N;

ll getDivisor(ll n) {
	vector<ll> v;
	for (ll i = 1; i*i <= n; i++) {
		if (n % i == 0) {
			v.push_back(i);
			if (i != n / i) {  
				v.push_back(n / i);
			}
		}
	}
	return v.size();
}

int main()
{
	cin >> N;
	cout << getDivisor(N) << endl;
	return 0;
}