#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <cstring>
#include <cstdlib>
#include <cmath>
using namespace std;
using ll = long long;

ll gcd(ll n, ll m) {
    if (n < m) swap(n, m);
    while (m != 0) {
        ll r = n % m;
        n = m;
        m = r;
    }
    return n;
}

template <class T>
struct SegmentTree {
    SegmentTree(int n) : n(n) {
        for (m = 2; m < n; m *= 2);
        t = vector<T>(m + n + n % 2);
    }
    T &operator[](int i) {
        return t[m + i];
    }
    const T &root() const {
        return t[1];
    }
    void build() {
        for (int i = (n - 1 + m) / 2; i > 0; i--) t[i] = t[i * 2] * t[i * 2 + 1];
    }
    void update(int i, const T &o) {
        for (t[i += m] = o; i /= 2, i > 0;) t[i] = t[i * 2] * t[i * 2 + 1];
    }
    T query(int l, int r) {
        T o0, o1;
        for (l += m, r += m; l < r; l /= 2, r /= 2) {
            if (l & 1) o0 = o0 * t[l++];
            if (r & 1) o1 = t[--r] * o1;
        }
        return o0 * o1;
    }
    vector<T> t;
    int n, m;
};

struct Node {
    constexpr Node() : v(0) {}
    Node(ll v) : v(v) {}
    Node operator*(const Node &o) const {
        return gcd(v, o.v);
    }
    ll v;
};

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

    int n;
    cin >> n;

    SegmentTree<Node> st(n);
    for (int i = 0; i < n; i++) {
        cin >> st[i].v;
    }
    st.build();

    ll r = 0;
    for (int i0 = 0, i1 = 0; i0 < n; i0++) {
        while (i1 <= n && st.query(i0, i1).v != 1) i1++;
        r += n - i1 + 1;
    }

    cout << r << endl;

    return 0;
}