#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")

#include <bits/stdc++.h>
using namespace std;
using ll = long long int;

ll temp;
inline ll gcd(ll a, ll b)
{
  if (a < b)
    swap(a, b);
  while (b != 0)
  {
    temp = b;
    b = a % b;
    a = temp;
  }
  return a;
}

ll a[500010];

template <typename T>
class SegmentTree
{
public:
  int N;
  ll dat[2000010];

  constexpr void init(int n)
  {
    N = 1;
    int sz = n;
    while (N < sz)
      N *= 2;
    for (int i = 0; i < N; ++i)
      dat[i + N - 1] = (i < sz ? a[i] : 0);
    for (int i = N - 2; i >= 0; --i)
      dat[i] = gcd(dat[i * 2 + 1], dat[i * 2 + 2]);
  }

  constexpr void update(int k, T a)
  {
    k += N - 1;
    dat[k] = a;
    while (k > 0)
    {
      k = (k - 1) / 2;
      dat[k] = gcd(dat[k * 2 + 1], dat[k * 2 + 2]);
    }
  }

  ll val_left, val_right;
  constexpr T query(int a, int b)
  {
    val_left = 0;
    val_right = 0;
    for (a += (N - 1), b += (N - 1); a < b; a >>= 1, b >>= 1)
    {
      if ((a & 1) == 0)
      {
        val_left = gcd(val_left, dat[a]);
      }
      if ((b & 1) == 0)
      {
        val_right = gcd(val_right, dat[--b]);
      }
    }
    return gcd(val_left, val_right);
  }
};

int main()
{
  /*
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout << setprecision(30) << setiosflags(ios::fixed);
*/
  ll n;
  cin >> n;
  int i;
  for (i = 0; i < n; i++)
    scanf("%lld", &a[i]);
  SegmentTree<ll> sg;
  sg.init(n);
  ll ans = (n + 1) * n / 2;
  int lo, hi, mi;
  for (i = 0; i < n; i++)
  {
    lo = i, hi = n + 1;
    while (hi - lo > 1)
    {
      mi = (lo + hi) / 2;
      if (sg.query(i, mi) > 1)
        lo = mi;
      else
        hi = mi;
    }
    ans -= (lo - i);
  }
  printf("%lld\n", ans);

  return 0;
}