use std::cmp::{min, max};

fn gcd(a: usize, b: usize) -> usize {
    if a % b == 0 { return b; }
    gcd(b, a % b)
}

fn main() {
    let mut n = String::new();
    std::io::stdin().read_line(&mut n).ok();
    let n: usize = n.trim().parse().unwrap();
    let mut a: Vec<usize> = vec![];
    for _ in 0..n {
        let mut atemp = String::new();
        std::io::stdin().read_line(&mut atemp).ok();
        let atemp: usize = atemp.trim().parse().unwrap();
        a.push(atemp);
    }

    let mut result: usize = 0;
    for i in 0..n {
        for j in i+1..n {
            let temp = gcd(max(a[i], a[j]), min(a[i], a[j]));
            if temp == 1 {
                result += n - 1 - j;
                continue;
            }
            for k in j+1..n {
                if gcd(max(temp, a[k]), min(temp, a[k])) == 1 {
                    result += 1;
                }
            }
        }
    }
    println!("{}", result);
}