#include <iostream>
#include <vector>

long long gcd(long long a, long long b) {
    if (a == 0) return b;
    if (b == 0) return a;
    long long r = a % b;
    return r ? gcd(b, r) : b;
}

struct SegmentTree {
    int n;
    std::vector<long long> node;

    SegmentTree(const std::vector<long long>& A) {
        n = 1;
        while (n < A.size()) n *= 2;
        node.resize(n * 2 - 1);

        for (int i = 0; i < A.size(); i++)
            node[i + n - 1] = A[i];
        for (int i = n - 2; i >= 0; i--)
            node[i] = gcd(node[i * 2 + 1], node[i * 2 + 2]);
    }

    long long get(int a, int b, int k=0, int l=0, int r=-1) {
        if (r < 0) r = n;
        if (r <= a || b <= l) return 0;
        if (a <= l && r <= b) return node[k];
        return gcd(
            get(a, b, k * 2 + 1, l, (l + r) / 2),
            get(a, b, k * 2 + 2, (l + r) / 2, r)
        );
    }
};

int main() {
    int N;
    std::cin >> N;

    std::vector<long long> A(N);
    for (int i = 0; i < N; i++)
        std::cin >> A[i];

    SegmentTree st(A);
    long long ans = 0;
    int i = 0, j = 1;
    while (i < N) {
        while (j <= N && st.get(i, j) != 1) j++;
        ans += N - j + 1;
        if (++i == j) j++;
    }
    std::cout << ans << "\n";
}