#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)

map<long long, int> factorize(long long n) {
  map<long long, int> ret;
  
  for (long long i = 2; i * i <= n; i++) {
    while (n % i == 0) {
      ++ret[i];
      n /= i;
    }
  }
  
  if (n != 1)
    ret[n] = 1;
  
  return ret;
}

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  int n;
  cin >> n;

  map<int, int> counter;
  REP (i, n) {
    int a;
    cin >> a;

    auto fs = factorize(a);
    vector<int> p;
    for (auto f: fs)
      p.push_back(f.first);
    
    REP (mask, 1<<p.size()) {
      if (mask) {
        int d = 1;
        REP (j, p.size())
          if (mask & 1<<j)
            d *= p[j];
        counter[d]++;
      }
    }
  }

  long long ret = 1LL<<n;
  --ret;  // null
  for (auto &pr: counter) {
    int x, y;
    tie(x, y) = pr;
    long long tmp = (1LL<<y) - 1;
    auto fs = factorize(x);
    if (fs.size() % 2)
      ret -= tmp;
    else
      ret += tmp;
  }
  cout << ret << endl;
  
  return 0;
}