#![allow(unused_imports, unused_macros, dead_code)]

macro_rules! min {
    (.. $x:expr) => {{
        let mut it = $x.iter();
        it.next().map(|z| it.fold(z, |x, y| min!(x, y)))
    }};
    ($x:expr) => ($x);
    ($x:expr, $($ys:expr),*) => {{
        let t = min!($($ys),*);
        if $x < t { $x } else { t }
    }}
}
macro_rules! max {
    (.. $x:expr) => {{
        let mut it = $x.iter();
        it.next().map(|z| it.fold(z, |x, y| max!(x, y)))
    }};
    ($x:expr) => ($x);
    ($x:expr, $($ys:expr),*) => {{
        let t = max!($($ys),*);
        if $x > t { $x } else { t }
    }}
}
macro_rules! ewriteln {
    ($($args:expr),*) => { let _ = writeln!(&mut std::io::stderr(), $($args),*); };
}
macro_rules! trace {
    ($x:expr) => { ewriteln!(">>> {} = {:?}", stringify!($x), $x) };
    ($($xs:expr),*) => { trace!(($($xs),*)) }
}
macro_rules! put {
    (.. $x:expr) => {{
        let mut it = $x.iter();
        if let Some(x) = it.next() { print!("{}", x); }
        for x in it { print!(" {}", x); }
        println!("");
    }};
    ($x:expr) => { println!("{}", $x) };
    ($x:expr, $($xs:expr),*) => { print!("{} ", $x); put!($($xs),*) }
}

const M: i64 = 1_000_000_007;

#[derive(Debug, Clone)]
struct DefaultMap<S, T>
where
    S: Eq + std::hash::Hash,
{
    data: std::collections::HashMap<S, T>,
    default: T,
}
impl<S: Eq + std::hash::Hash, T> DefaultMap<S, T> {
    fn new(default: T) -> DefaultMap<S, T> {
        DefaultMap {
            data: std::collections::HashMap::new(),
            default,
        }
    }
    fn keys(&self) -> std::collections::hash_map::Keys<S, T> {
        self.data.keys()
    }
    fn iter(&self) -> std::collections::hash_map::Iter<S, T> {
        self.data.iter()
    }
    fn len(&self) -> usize {
        self.data.len()
    }
}
impl<S: Eq + std::hash::Hash, T> std::ops::Index<S> for DefaultMap<S, T> {
    type Output = T;
    fn index(&self, key: S) -> &Self::Output {
        if let Some(val) = self.data.get(&key) {
            val
        } else {
            &self.default
        }
    }
}
impl<S: Eq + std::hash::Hash + Clone, T: Clone> std::ops::IndexMut<S> for DefaultMap<S, T> {
    fn index_mut(&mut self, key: S) -> &mut Self::Output {
        let val = self.default.clone();
        self.data.entry(key.clone()).or_insert(val);
        self.data.get_mut(&key).unwrap()
    }
}

fn main() {
    let mut sc = Scanner::new();
    let n: usize = sc.cin();

    let mut cx = DefaultMap::new(0);
    let xs: Vec<u64> = sc.vec(n);
    for &x in xs.iter() {
        cx[x] += 1;
    }

    let mut ans = 0;
    for &x in xs.iter() {
        let mut divisible = false;

        for p in 1..=x {
            if p * p > x {
                break;
            }
            if x % p != 0 {
                continue;
            }
            let q = x / p;
            if p == x && cx[p] >= 2 {
                divisible = true;
                break;
            }
            if p != x && cx[p] >= 1 {
                divisible = true;
                break;
            }
            if q == x && cx[q] >= 2 {
                divisible = true;
                break;
            }
            if q != x && cx[q] >= 1 {
                divisible = true;
                break;
            }
        }

        if !divisible {
            ans += 1
        }
    }
    put!(ans);
}

use std::collections::VecDeque;
use std::io::{self, Write};
use std::str::FromStr;

struct Scanner {
    stdin: io::Stdin,
    buffer: VecDeque<String>,
}
impl Scanner {
    fn new() -> Self {
        Scanner {
            stdin: io::stdin(),
            buffer: VecDeque::new(),
        }
    }
    fn cin<T: FromStr>(&mut self) -> T {
        while self.buffer.is_empty() {
            let mut line = String::new();
            let _ = self.stdin.read_line(&mut line);
            for w in line.split_whitespace() {
                self.buffer.push_back(String::from(w));
            }
        }
        self.buffer.pop_front().unwrap().parse::<T>().ok().unwrap()
    }
    fn chars(&mut self) -> Vec<char> {
        self.cin::<String>().chars().collect()
    }
    fn vec<T: FromStr>(&mut self, n: usize) -> Vec<T> {
        (0..n).map(|_| self.cin()).collect()
    }
}


Measured memory_bytes: 18908