#include <bits/stdc++.h>

using namespace std;
using ll = long long;

vector<ll> factor;

void all_factor(ll n){
    factor.clear();
    for (ll i = 1; i*i <= n; i++){
        if (n % i == 0){
            factor.push_back(i);
            if (i*i != n) factor.push_back(n / i);
        }
    }
}

int main(){
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);
    
    int N;
    cin >> N;

    all_factor(N);
    cout << N-factor.size() << endl;

    return 0;
}