#include <bits/stdc++.h>
#include <atcoder/segtree>
using namespace atcoder;
using namespace std;
using ll = long long;
ll op(ll a, ll b) {return gcd(a, b);}
ll e() {return 0LL;}
int main() {
	int N;cin >> N;
	vector<ll> A(N + 1, 0);
	for (int i = 1;i <= N;i++) cin >> A[i];
	int r = -1;
	ll ans = 0;
	segtree<ll, op, e> seg(A);
	for (int i = 1;i <= N;i++) {
		if (r == -1 or r == i - 1) {
			ll g = 0;
			for (int k = i;k <= N;k++) {
				if (gcd(g, A[k]) == 1) break;
				g = gcd(g, A[k]);
				r = k;		
			}
			if (r == -1) {
				ans += N - i + 1;
			} else {
				ans += N - r;
			}
			continue;
		}
		ll now = seg.prod(i, r + 1);
		for (int k = r + 1;k <= N;k++) {
			if (gcd(A[k], now) == 1) break;
			r = k;
			now = gcd(now, A[k]);
		}
		ans += N - r;
	}
	cout << ans << endl;
}