use std::{collections::HashMap, io::stdin};

fn main() {
    let stdin = stdin();
    let mut stdin = stdin.lines().map(Result::unwrap);
    let _n = stdin.next().unwrap().parse::<usize>().unwrap();
    let a = stdin
        .next()
        .unwrap()
        .split_whitespace()
        .map(|x| x.parse::<u64>().unwrap())
        .collect::<Vec<_>>();
    let mut dp = HashMap::new();
    dp.insert(0, 1_u64);
    for &x in &a {
        let mut swp = dp.clone();
        for (k, v) in dp {
            *swp.entry(gcd(k, x)).or_insert(0) += v;
        }
        dp = swp;
    }
    let ans = dp.get(&1).copied().unwrap_or(0);
    println!("{}", ans);
}
fn gcd(mut m: u64, mut n: u64) -> u64 {
    if m == 0 || n == 0 {
        return m | n;
    }
    let shift = (m | n).trailing_zeros();
    m >>= m.trailing_zeros();
    n >>= n.trailing_zeros();

    while m != n {
        if m > n {
            m -= n;
            m >>= m.trailing_zeros();
        } else {
            n -= m;
            n >>= n.trailing_zeros();
        }
    }
    m << shift
}