## https://yukicoder.me/problems/no/1036


def calc_gcd(A, B):
    """
    正の整数A, Bの最大公約数を計算する
    """
    a = max(A, B)
    b = min(A, B)
    while a % b > 0:
        c = a % b
        a = b
        b = c
    return b


class SparseTable:

    def __init__(self, A):
        self.N = len(A)

        k = 0
        while (1 << k) < self.N:
            k += 1
        self.max_k = k
        self.table = [[] for _ in range(self.N)]
        for k in range(self.max_k + 1):
            for i in range(self.N):
                if k == 0:
                    self.table[i].append(A[i])
                else:
                    if i + (1 << k) - 1 < self.N:
                        if len(self.table[i]) < k:
                            continue
                        if len(self.table[i + (1 << (k - 1))]) < k:
                            continue
                        a = self.table[i][k - 1]
                        b = self.table[i + (1 << (k - 1))][k - 1]
                        self.table[i].append(calc_gcd(a, b))
    
    def query(self, l, r):
        length = r - l + 1
        if length == 1:
            return self.table[l][0]

        k = 0
        while (1 << k) < length:
            k += 1
        k -= 1
        
        a = self.table[l][k]
        b = self.table[r - ((1 << k) - 1)][k]
        return calc_gcd(a, b)


def main():
    N = int(input())
    A = list(map(int, input().split()))

    st = SparseTable(A)

    answer = 0
    left = 0
    right = 0
    a = A[0]
    while left < N and a == 1:
        answer += N - left
        left += 1
        right += 1
        if left < N:
            a = A[left]
        else:
            a = 0

    while left < N:
        while right < N - 1 and calc_gcd(a, A[right + 1]) > 1:
            a = calc_gcd(a, A[right + 1])
            right += 1
        
        if right < N - 1:
            answer += N - (right + 1)
            if left < right:
                left += 1
                a = st.query(left, right)
            else:
                left += 1
                right += 1
                a = A[left]
                while left < N and a == 1:
                    answer += N - left
                    left += 1
                    right += 1
                    if left < N:
                        a = A[left]
                    else:
                        a = 0
        else:
            if left < right:
                left += 1
                a = st.query(left, right)
            else:
                break
    print(answer)












if __name__ == "__main__":
    main()