### BUGGY CODE ###

def getN():
    return int(input())


def getNM():
    return map(int, input().split())


def getList():
    return list(map(int, input().split()))


from collections import defaultdict, deque, Counter
from sys import exit
import math
import copy
from bisect import bisect_left, bisect_right
from heapq import *
import sys

# sys.setrecursionlimit(1000000)
INF = 10 ** 17
MOD = 1000000007

from fractions import *


def inverse(f):
    # return Fraction(f.denominator,f.numerator)
    return 1 / f


def combmod(n, k, mod=MOD):
    ret = 1
    for i in range(n - k + 1, n + 1):
        ret *= i
        ret %= mod

    for i in range(1, k + 1):
        ret *= pow(i, mod - 2, mod)
        ret %= mod

    return ret

MOD = 10 ** 9 + 7
def wari(n):
    res = []
    for i in range(1, int(math.sqrt(n)) + 1):
        if n % i == 0:
            res.append(i)
            res.append(n // i)

    return res

def solve():
    n = getN()
    nums = getList()
    cnt = Counter(nums)
    ans = 0
    for num in nums:
        flag = True
        # print(wari(num))
        for r in wari(num):
            if r in cnt.keys() and (r != num or cnt[r] > 1):
                flag = False
                # print(r)
                break
        if flag:
            ans += 1

    print(ans)
def main():
    n = getN()
    for _ in range(n):
        solve()


if __name__ == "__main__":
    solve()

### FIXED CODE ###

def getN():
    return int(input())


def getNM():
    return map(int, input().split())


def getList():
    return list(map(int, input().split()))


from collections import defaultdict, deque, Counter
from sys import exit
import math
import copy
from bisect import bisect_left, bisect_right
from heapq import *
import sys

# sys.setrecursionlimit(1000000)
INF = 10 ** 17
MOD = 1000000007

from fractions import *


def inverse(f):
    # return Fraction(f.denominator,f.numerator)
    return 1 / f


def combmod(n, k, mod=MOD):
    ret = 1
    for i in range(n - k + 1, n + 1):
        ret *= i
        ret %= mod

    for i in range(1, k + 1):
        ret *= pow(i, mod - 2, mod)
        ret %= mod

    return ret

MOD = 10 ** 9 + 7
def wari(n):
    res = []
    for i in range(1, int(math.sqrt(n)) + 1):
        if n % i == 0:
            res.append(i)
            res.append(n // i)

    return res
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 += 1 + i % 2
        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 yaku(n):
    fac = primeFactor(n)
    # print(type(fac))
    res = [1]
    for k, v in fac.items():
        new = []
        for i in range(v+1):
            for r in res:
                new.append(r * (k**i))
        res = new
    return res
def solve():
    n = getN()
    nums = getList()
    cnt = Counter(nums)
    ans = 0
    for num in nums:
        flag = True
        # print(primeFactor(num))
        for r in yaku(num):
            if r in cnt.keys() and (r != num or cnt[r] > 1):
                flag = False
                # print(r)
                break
        if flag:
            ans += 1

    print(ans)
def main():
    n = getN()
    for _ in range(n):
        solve()


if __name__ == "__main__":
    solve()