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

vector<long long> calc_divisors(long long N) {
    vector<long long> res;
    for (long long i = 1; i * i <= N; ++i) {
        if (N % i != 0) continue;
        res.push_back(i);
        if (N / i != i) res.push_back(N / i);
    }
    sort(res.begin(), res.end());
    return res;
}

int main(){
  ll n;
  cin>>n;
  vector<ll> v=calc_divisors(n);
  ll ans=0;
  for(ll i=0;i<(ll)v.size();i++){
    ll val=n/v[i];
    if(val>=1){
      ans++;
    }
  }
  cout<<ans<<endl;
}