typedef long long ll;
typedef long double ld;
#include <bits/stdc++.h>
using namespace std;
#define int long long


struct Eratos {
    vector<int> primes;
    vector<bool> isprime;
    vector<int> mebius;
    vector<int> min_factor;

    Eratos(int MAX) : primes(),
                      isprime(MAX+1, true),
                      mebius(MAX+1, 1),
                      min_factor(MAX+1, -1) {
        isprime[0] = isprime[1] = false;
        min_factor[0] = 0, min_factor[1] = 1;
        for (int i = 2; i <= MAX; ++i) {
            if (!isprime[i]) continue;
            primes.push_back(i);
            mebius[i] = -1;
            min_factor[i] = i;
            for (int j = i*2; j <= MAX; j += i) {
                isprime[j] = false;
                if ((j / i) % i == 0) mebius[j] = 0;
                else mebius[j] = -mebius[j];
                if (min_factor[j] == -1) min_factor[j] = i;
            }
        }
    }

    // prime factorization
    vector<pair<int,int>> prime_factors(int n) {
        vector<pair<int,int> > res;
        while (n != 1) {
            int prime = min_factor[n];
            int exp = 0;
            while (min_factor[n] == prime) {
                ++exp;
                n /= prime;
            }
            res.push_back(make_pair(prime, exp));
        }
        return res;
    }

    // enumerate divisors
    vector<int> divisors(int n) {
        vector<int> res({1});
        auto pf = prime_factors(n);
        for (auto p : pf) {
            int n = (int)res.size();
            for (int i = 0; i < n; ++i) {
                int v = 1;
                for (int j = 0; j < p.second; ++j) {
                    v *= p.first;
                    res.push_back(res[i] * v);
                }
            }
        }
        return res;
    }
};

// 整数値 x にハッシュ値を割り当てる関数
struct custom_hash {
    static uint64_t splitmix64(uint64_t x) {
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator() (uint64_t x) const {
        static const uint64_t FIXED_RANDOM =    
            chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
} rng;


signed main(){
    ll n;
    Eratos er((ll)1e6+10);
    std::cin >> n;
    map<ll,ll> hashm;
    map<ll,ll> cnt;
    cnt[0]++;
    ll now = 0;
    for (int i = 0; i < n; i++) {
        ll a;
        std::cin >> a;
        auto vec = er.prime_factors(a);
        for (auto e : vec) {
            if(e.second%2==0)continue;
            if(hashm[e.first]==0){
                hashm[e.first] = rng(e.first);
            }
            now ^= hashm[e.first];
        }
        cnt[now]++;
    }
    ll ans = 0;
    for (auto e : cnt) {
        ans += e.second*(e.second-1)/2;
    }
    std::cout << ans << std::endl;
}