from math import gcd

class SWAG:

    def __init__(self,f):
        self.st1 = []
        self.st2 = []
        self.rst1 = []
        self.rst2 = []
        self.f = f


    def calc_all(self):
        calc = 0
        if self.st1:
            calc = self.f(calc,self.rst1[-1])

        if self.st2:
            calc = self.f(calc,self.rst2[-1])
        return calc


    def pop_front(self):
        if self.st1 == []:
            self.st1 = self.st2[::-1]
            self.rst1 = self.st1[:]
            for i in range(1,len(self.st1)):
                self.rst1[i] = self.f(self.rst1[i-1],self.st1[i])
            self.st2 = []
            self.rst2 = []

        self.st1.pop()
        self.rst1.pop()

    def push_back(self,val):
        if self.st2 == []:
            self.rst2.append(val)
        else:
            self.rst2.append(self.f(self.rst2[-1],val))
        self.st2.append(val)


    
n = int(input())
A = list(map(int,input().split()))
swag = SWAG(gcd)
ans = 0
now = 0
for i,a in enumerate(A):
    while now < n and swag.calc_all() != 1:
        swag.push_back(A[now])
        now += 1
    if swag.calc_all() == 1:
        ans += n-now+1
    swag.pop_front()
print(ans)