"use strict";
var input = require("fs").readFileSync("/dev/stdin", "utf8");
var cin = input.split(/ |\n/),
    cid = 0;

// number一個取得
// eslint-disable-next-line no-unused-vars
const next = () => +cin[cid++];

// 文字列一個取得
// eslint-disable-next-line no-unused-vars
const nextstr = () => cin[cid++];

// BigInteger一個取得
// eslint-disable-next-line no-unused-vars
const nextbig = () => BigInt(cin[cid++]);

// 長さnの配列として取得。aは文字列フラグ
// eslint-disable-next-line no-unused-vars
const nexts = (n, a) =>
    a ? cin.slice(cid, (cid += n)) : cin.slice(cid, (cid += n)).map((a) => +a);

// w個ずつを組にして長さhの配列。aは文字列フラグ。
// eslint-disable-next-line no-unused-vars
const nextm = (h, w, a) => {
    var r = [],
        i = 0;
    if (a) for (; i < h; i++) r.push(cin.slice(cid, (cid += w)));
    else for (; i < h; i++) r.push(cin.slice(cid, (cid += w)).map((a) => +a));
    return r;
};
// 多次元配列。v,a1,a2,a3 なら、3次元。[[値vで長さa3の配列]をa2個並べた配列]をa1個並べた配列。
// eslint-disable-next-line no-unused-vars
const xArray = (...args) => {
    var a = args,
        l = a.length,
        r = "Array(a[" + --l + "]).fill().map(x=>{return " + a[0] + ";})";
    while (--l) r = "Array(a[" + l + "]).fill().map(x=>" + r + ")";
    return eval(r);
};

console.log(main());

function main() {
    let n = next();
    let a = nexts(n).sort((a, b) => a - b);
    let ans = 0;
    if (n == 1) return 1;
    //let b = Array.from(new Set(a));
    let dp = Array(a[n - 1] + 1).fill(true);
    //let nums = Array(a[n - 1] + 1).fill(0);
    //for (let i = 0; i < n; i++) nums[a[i]]++;
    let alength = a.length;
    a.push(0);
    for (let i = 0; i < alength; i++) {
        let x = a[i];
        if (dp[x]) {
            let jougen = Math.floor(a[n - 1] / x);
            //console.log({ x, jougen }, x * jougen);
            for (let j = 2; j <= jougen; j++) {
                dp[x * j] = false;
            }
            dp[x] = false;
            if (a[i] != a[i + 1]) ans++;
        }
    }

    return ans;
}
