### BUGGY CODE ###

import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

n = int(readline())
a = list(map(int,readline().split()))
a.sort()

if a[0] == a[-1]:
  if n > 1:
    print(0)
  else:
    print(1)
  exit()

def gcd(a, b):
    while b: a, b = b, a % b
    return a
def isPrimeMR(n):
    d = n - 1
    d = d // (d & -d)
    L = [2]
    for a in L:
        t = d
        y = pow(a, t, n)
        if y == 1: continue
        while y != n - 1:
            y = (y * y) % n
            if y == 1 or t == n - 1: return 0
            t <<= 1
    return 1
def findFactorRho(n):
    m = 1 << n.bit_length() // 8
    for c in range(1, 99):
        f = lambda x: (x * x + c) % n
        y, r, q, g = 2, 1, 1, 1
        while g == 1:
            x = y
            for i in range(r):
                y = f(y)
            k = 0
            while k < r and g == 1:
                ys = y
                for i in range(min(m, r - k)):
                    y = f(y)
                    q = q * abs(x - y) % n
                g = gcd(q, n)
                k += m
            r <<= 1
        if g == n:
            g = 1
            while g == 1:
                ys = f(ys)
                g = gcd(abs(x - ys), n)
        if g < n:
            if isPrimeMR(g): return g
            elif isPrimeMR(n // g): return n // g
            return findFactorRho(g)
def primeFactor(n):
    i = 2
    ret = {}
    rhoFlg = 0
    while i * i <= n:
        k = 0
        while n % i == 0:
            n //= i
            k += 1
        if k: ret[i] = k
        i += i % 2 + (3 if i % 3 == 1 else 1)
        if i == 101 and n >= 2 ** 20:
            while n > 1:
                if isPrimeMR(n):
                    ret[n], n = 1, 1
                else:
                    rhoFlg = 1
                    j = findFactorRho(n)
                    k = 0
                    while n % j == 0:
                        n //= j
                        k += 1
                    ret[j] = k
 
    if n > 1: ret[n] = 1
    if rhoFlg: ret = {x: ret[x] for x in sorted(ret)}
    return ret

def divisors(N):
    pf = primeFactor(N)
    ret = [1]
    for p in pf:
        ret_prev = ret
        ret = []
        for i in range(pf[p]+1):
            for r in ret_prev:
                ret.append(r * (p ** i))
    return ret
    
s = set()
ans = 0
for nm,i in enumerate(a):
  c = set(divisors(i))
  if c&s == set() and ((nm < n-1 and a[nm+1] != i) or nm == n-1): 
    ans += 1
  s.add(i)

print(ans)

### FIXED CODE ###

import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

n = int(readline())
a = list(map(int,readline().split()))
a.sort()
if a[0] == a[-1]:
  if n > 1:
    print(0)
  else:
    print(1)
  exit()

if a[0] == 1:
  if a[0] == a[1]:
    print(0)
  else:
    print(1)
  exit()
  
def divisorize(fct):
    b, e = fct.pop()
    pre_div = divisorize(fct) if fct else [[]]
    suf_div = [[(b, k)] for k in range(e + 1)]
    return [pre + suf for pre in pre_div for suf in suf_div]

def factorize(n):
    fct = []
    b, e = 2, 0
    while b * b <= n:
        while n % b == 0:
            n = n // b
            e = e + 1
        if e > 0:
            fct.append((b, e))
        b, e = b + 1, 0
    if n > 1:
        fct.append((n, 1))
    return fct
 
 
def num(fct):
    a = 1
    for base, exponent in fct:
        a = a * base**exponent
    return a
    
s = set()
if a[0] < a[1]:
  ans = 1
else:
  ans = 0
s.add(a[0])
for nm,i in enumerate(a[1:]):
  c = set()
  fct = factorize(i)
  for div in divisorize(fct):
      c.add(num(div))
  if c&s == set() and ((nm < n-2 and a[nm+2] != i) or nm == n-2):
    ans += 1
  s.add(i)

print(ans)