#include <map>
#include <set>
#include <list>
#include <cmath>
#include <ctime>
#include <deque>
#include <queue>
#include <stack>
#include <bitset>
#include <map>
#include <set>
#include <list>
#include <cmath>
#include <ctime>
#include <deque>
#include <queue>
#include <stack>
#include <bitset>
#include <cstdio>
#include <limits>
#include <vector>
#include <cstdlib>
#include <numeric>
#include <sstream>
#include <iostream>
#include <algorithm>
#include <functional> 
#include <iomanip>
#include <unordered_map>
#include <memory.h>
#include <unordered_set>
#include <fstream>

using namespace std;

#define PI 3.141592653589793
#define MAX 1000000001
const int Mod = 100000007;

long long int tree[1 << 20];

long long int gcd(long long int a, long long int b)
{
	if (b == 0)
	{
		return a;
	}
	return gcd(b, a % b);
}

long long int update(int nodenum, int start, int end)
{
	if (start == end)
	{
		return tree[nodenum];
	}
	int mid = (start + end) / 2;
	return tree[nodenum] = gcd(update(2 * nodenum, start, mid), update(2 * nodenum + 1, mid + 1, end));
}
long long int find(int from, int to, int nodenum, int start, int end)
{
	if (to < start || end < from)
	{
		return 0;
	}
	if (from <= start && end <= to)
	{
		return tree[nodenum];
	}
	int mid = (start + end) / 2;
	return gcd(find(from, to, 2 * nodenum, start, mid), find(from, to, (2 * nodenum + 1), mid + 1, end));
}

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

	int size, n, a, b;

	cin >> n;

	size = ceil(log2(n));
	size = pow(2, size);

	for (int i = 0; i < n; i++)
	{
		cin >> tree[size + i];
	}
	
	update(1, 1, size);
	long long int res = 0;
	for (int i = 1; i <= n; i++)
	{
		if (find(i, n, 1, 1, size) != 1)
		{
			continue;
		}
		long long int lo = i;
		long long int hi = n;
		long long int m = 1e9;
		while (lo <= hi)
		{
			long long int mid = (lo + hi) / 2;
			long long int g = find(i, mid, 1, 1, size);
			//cout << i << ' ' << mid << ' ' << g << '\n';
			if (g == 1)
			{
				m = min(mid, m);
				hi = mid - 1;
			}
			else
			{
				lo = mid + 1;
			}
		}
		if (m == 1e9)
		{
			continue;
		}
		//cout << m << ' ' << i << '\n';
		long long int len = n - m + 1;
		res += len;
	}

	cout << res << '\n';
	return 0;
}