#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef unsigned long long ull;
typedef long double ld;
int dx[8] = { 1, 0, -1, 0, 1, 1, -1, -1 }, dy[8] = { 0, 1, 0, -1, 1, -1, 1, -1 };
const long long mod = 998244353;
const ll inf = 1LL << 60;
const int INF = 5e8;

vector<ll> enumdiv(ll n)
{
    vector<ll> S;
    for (ll i = 1; 1LL * i * i <= n; i++)
        if (n % i == 0) {
            S.push_back(i);
            if (i * i != n)
                S.push_back(n / i);
        }
    sort(S.begin(), S.end());
    return S;
}

int main()
{
    int n;
    cin >> n;
    auto v = enumdiv(n);

    cout << n - v.size() << endl;
}