#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pii = pair<int, int>;
using pdd = pair<ld, ld>;
using pll = pair<ll, ll>;
using pli = pair<ll, int>;
using pil = pair<int, ll>;
template <typename T>
using Graph = vector<vector<T>>;
const int MOD1 = 998244353;
const int MOD2 = 1000000007;
const ld PI = acos(-1);

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

    int n;
    cin >> n;
    vector<int> a(n);
    for (int i = 0; i < n; ++i) {
        cin >> a[i];
    }

    int ma = 1000000;

    vector<bool> isprime(ma + 1, true);
    vector<int> pr(ma + 1, 1);
    isprime[0] = isprime[1] = false;
    for (int i = 2; i <= ma; ++i) {
        if (!isprime[i])
            continue;
        pr[i] = i;

        if (i * i <= ma) {
            for (int j = 2 * i; j <= ma; j += i) {
                isprime[j] = false;
                if (pr[j] == 1)
                    pr[j] = i;
            }
        }
    }

    unordered_map<int, int> mp;
    {
        int cnt = 0;
        for (int i = 2; i <= ma; ++i) {
            if (isprime[i]) {
                mp[i] = cnt++;
            }
        }
    }

    vector<ll> inv1(ma + 1), inv2(ma + 1);
    inv1[1] = inv2[1] = 1;
    for (int i = 2; i <= ma; ++i) {
        inv1[i] = MOD1 - (MOD1 / i) * inv1[MOD1 % i] % MOD1;
        inv2[i] = MOD2 - (MOD2 / i) * inv2[MOD2 % i] % MOD2;
    }

    unordered_map<ll, int> mp2;
    vector<bool> cnt(mp.size());
    ll m1 = 1, m2 = 1;
    mp2[(m1 << 30) | m2] = 1;
    ll ans = 0;
    for (int i = 0; i < n; ++i) {
        while (a[i] != 1) {
            int tmp = pr[a[i]];
            int idx = mp[tmp];
            if (cnt[idx]) {
                (m1 *= inv1[tmp]) %= MOD1;
                (m2 *= inv2[tmp]) %= MOD2;
                cnt[idx] = 0;
            } else {
                (m1 *= tmp) %= MOD1;
                (m2 *= tmp) %= MOD2;
                cnt[idx] = 1;
            }
            a[i] /= tmp;
        }
        ans += mp2[(m1 << 30) | m2];
        mp2[(m1 << 30) | m2]++;
    }

    cout << ans << endl;

    return 0;
}