#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define SPEED cin.tie(0);ios::sync_with_stdio(false);

template<class Operator> class DisjointSparseTable{
public:
	Operator Op;                           
	using typeNode = decltype(Op.unitNode);
	size_t depth;
	size_t length;
	vector<vector<typeNode>> node;
	vector<size_t> msb;

	DisjointSparseTable(const vector<typeNode>& vec) {
		for(depth = 0;(1<<depth)<=vec.size();++depth);
		length = (1<<depth);
		
		//msb
		msb.resize(length,0);
		for(int i = 0; i < length; ++i) for(int j = 0; j < depth; ++j) if(i>>j) msb[i] = j;

		//init value
		node.resize(depth,vector<typeNode>(length,Op.unitNode));
		for(int i = 0; i < vec.size(); ++i) node[0][i] = vec[i];

		for(int i = 1; i < depth; ++i) {
			for(int r = (1<<i),l = r-1; r < length; r += (2<<i),l = r-1){
				//init accumulate
				node[i][l] = node[0][l];
				node[i][r] = node[0][r];
				//accumulate
				for(int k = 1; k < (1<<i); ++k) {
					node[i][l-k] = Op.funcNode(node[i][l-k+1],node[0][l-k]);
					node[i][r+k] = Op.funcNode(node[i][r+k-1],node[0][r+k]);
				}
			}
		}
	}

	//[l,r)
	typeNode get(int l,int r) {
		r--;
		return (l>r||l<0||length<=r) ? Op.unitNode: (l==r ? node[0][l] : Op.funcNode(node[msb[l^r]][l],node[msb[l^r]][r]));
	}
};

int ctz(long long a) { return __builtin_ctzll(a); }
template <class T> T gcd(T a, T b) {
  a = abs(a), b = abs(b);
  if (a == 0) return b;
  int k = ctz(a | b);
  a >>= ctz(a);
  while (b) {
    b >>= ctz(b);
    if (a > b) swap(a, b);
    b -= a;
  }
  return a << k;
}

template<class typeNode> struct nodeGCD {
	typeNode unitNode = 0;
	typeNode funcNode(typeNode l,typeNode r){return gcd(l,r);}
};

// solution by binary search in arbitary range on disjn sparse table 
int main() {
	SPEED
	ll N; cin >> N;
    assert(1 <= N && N <= 500000);
	vector<ll> A(N+1,1);
	for(int i = 0; i < N; ++i) cin >> A[i];
	for(int i = 0; i < N; ++i) assert(1 <= A[i] && A[i] <= 1000000000000000000LL);
	DisjointSparseTable<nodeGCD<ll>> dst(A);
	ll ans=0;
	int r=1;
	for(int i=0; i<N; i++){
		while(r<=N){
			if(dst.get(i, r)==1) break;
			r++;
		}
		ans+=N+1-r;
	}
	cout << ans << endl;
}