#pragma GCC target("avx")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include "bits/stdc++.h"
#pragma warning(disable:4996)
using namespace std;
#define int long long
#define rep(i,n) for(int i=0;i<n;i++)
int a[500006];

int gcd(int a, int b) {
	if (!b)return a; return gcd(b, a%b);
}

struct segtree {
	vector<int>node; int n;
	void init(int N) {
		n = 1;
		while (n < N) {
			n *= 2;
		}
		node.resize(2 * n, 0);
	}
	void upd(int a, int x) {
		a += n - 1;
		node[a] = x;
		while (a > 0) {
			a = (a - 1) / 2;
			node[a] = gcd(node[2 * a + 1], node[2 * a + 2]);
		}
	}
	int calc(int a, int b, int k, int l, int r) {
		if (r <= a || b <= l)return 0;
		if (a <= l&&r <= b)return node[k];
		int vl = calc(a, b, k * 2 + 1, l, (l + r) / 2);
		int vr = calc(a, b, k * 2 + 2, (l + r) / 2, r);
		return gcd(vl, vr);
	}
	int get(int a, int b) {
		return calc(a, b, 0, 0, n);
	}
};

segtree seg;
signed main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n; cin >> n;
	seg.init(n);
	rep(i, n) {
		cin >> a[i];
		seg.upd(i, a[i]);
	}
	int res = 0;
	rep(i, n) {
		int l = i - 1, r = n;
		while (r - l > 1) {
			int mi = (l + r) / 2;
			if (seg.get(i, mi + 1) == 1)r = mi;
			else l = mi;
		}
		res += n - r;
	}
	cout << res << endl;
}