use std::io::Read;

fn factor(a: u32) -> Vec<u32> {
    let mut a = a;
    let mut k = 2;
    let mut b = vec![];
    while k * k <= a {
        if a % k == 0 {
            b.push(k);
        }
        while a % k == 0 {
            a /= k;
        }
        k += 1;
    }
    if a > 1 {
        b.push(a);
    }
    b
}

fn run() {
    let mut s = String::new();
    std::io::stdin().read_to_string(&mut s).unwrap();
    let mut it = s.trim().split_whitespace();
    let n: usize = it.next().unwrap().parse().unwrap();
    let a: Vec<u32> = (0..n).map(|_| it.next().unwrap().parse().unwrap()).collect();
    let mut memo = std::collections::BTreeSet::new();
    let mut ans = (1i64 << (n as i64)) - 1;
    for &v in &a {
        let f = factor(v);
        let len = f.len();
        for i in 1..(1 << len) {
            let mut p = 1;
            let mut sign = 1;
            for (j, &f) in f.iter().enumerate() {
                if (i >> j) & 1 == 1 {
                    p *= f;
                    sign *= -1;
                }
            }
            if memo.contains(&p) {
                continue;
            }
            memo.insert(p);
            let mut cnt = 0;
            for &a in &a {
                if a % p == 0 {
                    cnt += 1;
                }
            }
            ans += sign * ((1 << cnt) - 1);
        }
    }
    println!("{}", ans);
}

fn main() {
    run();
}