/* -*- coding: utf-8 -*-
 *
 * 1146.cc:  No.1146 土偶Ⅰ - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

const int MAX_N = 100;

/* typedef */

/* global variables */

int as[MAX_N];

/* subroutines */

template <typename T>
T gcd(T m, T n) {  // m > 0, n > 0
  if (m < n) swap(m, n);
  while (n > 0) {
    T r = m % n;
    m = n;
    n = r;
  }
  return m;
}

/* main */

int main() {
  int n;
  scanf("%d", &n);
  for (int i = 0; i < n; i++) scanf("%d", as + i);

  int cnt = 0;
  for (int i = 0; i < n; i++)
    for (int j = i + 1; j < n; j++) {
      int g = gcd<int>(as[i], as[j]);
      for (int k = j + 1; k < n; k++)
	if (gcd<int>(g, as[k]) == 1) cnt++;
    }

  printf("%d\n", cnt);
  return 0;
}