use std::io::Read;

fn gcd(a: u32, b: u32) -> u32 {
    if b == 0 {a} else {gcd(b, 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 dp = std::collections::BTreeMap::<u32, u64>::new();
    for a in a {
        let mut next = dp.clone();
        for (k, v) in dp {
            let k = gcd(k, a);
            *next.entry(k).or_insert(0) += v;
        }
        *next.entry(a).or_insert(0) += 1;
        dp = next;
    }
    if let Some(&v) = dp.get(&1) {
        println!("{}", v);
    } else {
        println!("0");
    }
}

fn main() {
    run();
}