#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (n); i ++)
using namespace std;
typedef long long ll;
typedef pair<ll,ll> PL;
typedef pair<int,int> P;
const int INF = 1e9;
const ll MOD = 1e9 + 7;
const double eps = 1e-6;

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