#include using namespace std; using int64 = long long; const int mod = 998244353; const int64 infll = (1LL << 62) - 1; const int inf = (1 << 30) - 1; struct IoSetup { IoSetup() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(10); cerr << fixed << setprecision(10); } } iosetup; template< typename T1, typename T2 > ostream &operator<<(ostream &os, const pair< T1, T2 > &p) { os << p.first << " " << p.second; return os; } template< typename T1, typename T2 > istream &operator>>(istream &is, pair< T1, T2 > &p) { is >> p.first >> p.second; return is; } template< typename T > ostream &operator<<(ostream &os, const vector< T > &v) { for(int i = 0; i < (int) v.size(); i++) { os << v[i] << (i + 1 != v.size() ? " " : ""); } return os; } template< typename T > istream &operator>>(istream &is, vector< T > &v) { for(T &in : v) is >> in; return is; } template< typename T1, typename T2 > inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); } template< typename T1, typename T2 > inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); } template< typename T = int64 > vector< T > make_v(size_t a) { return vector< T >(a); } template< typename T, typename... Ts > auto make_v(size_t a, Ts... ts) { return vector< decltype(make_v< T >(ts...)) >(a, make_v< T >(ts...)); } template< typename T, typename V > typename enable_if< is_class< T >::value == 0 >::type fill_v(T &t, const V &v) { t = v; } template< typename T, typename V > typename enable_if< is_class< T >::value != 0 >::type fill_v(T &t, const V &v) { for(auto &e : t) fill_v(e, v); } template< typename F > struct FixPoint : F { explicit FixPoint(F &&f) : F(forward< F >(f)) {} template< typename... Args > decltype(auto) operator()(Args &&... args) const { return F::operator()(*this, forward< Args >(args)...); } }; template< typename F > inline decltype(auto) MFP(F &&f) { return FixPoint< F >{forward< F >(f)}; } vector< int64_t > divisor(int64_t n) { vector< int64_t > ret; for(int64_t i = 1; i * i <= n; i++) { if(n % i == 0) { ret.push_back(i); if(i * i != n) ret.push_back(n / i); } } sort(begin(ret), end(ret)); return (ret); } int main() { int N; cin >> N; vector< int > A(N); cin >> A; sort(begin(A), end(A)); vector< int > dd; vector< pair< int, int > > mp; for(auto p : A) { auto it = divisor(p); for(auto &q : it) dd.emplace_back(q); } sort(begin(dd), end(dd)); dd.erase(unique(begin(dd), end(dd)), end(dd)); vector< int64 > dp(dd.size()), sub(dd.size()); for(auto p : A) { for(int i = 0; i < dd.size(); i++) { if(dd[i] == p) { dp[i]++; } } } for(int i = (int) dd.size() - 1; i >= 0; i--) { int64 uku = 0; int64 add = dp[i]; for(int j = i + 1; j < dd.size(); j++) { if(dd[j] % dd[i] == 0) { add += dp[j]; uku += sub[j]; } } sub[i] = (1LL << add) - 1 - uku; } cout << sub[0] << endl; }