use std::io::*;

mod sparse_table {
    pub struct SparseTable<T, F> {
        table: Vec<Vec<T>>,
        func: F,
    }
    impl<T: Copy + Clone, F: Fn(T, T) -> T> SparseTable<T, F> {
        pub fn new(a: &Vec<T>, id: T, f: F) -> SparseTable<T, F> {
            let n = a.len();
            let max_log = (32 - (n as u32).leading_zeros()) as usize;
            let mut table = vec![vec![id; n]; max_log];
            table[0] = a.clone();
            for j in 1..max_log {
                for i in 0..n - (1 << j) + 1 {
                    table[j][i] = f(table[j - 1][i], table[j - 1][i + (1 << (j - 1))]);
                }
            }

            SparseTable {
                table: table,
                func: f,
            }
        }
        pub fn get(&self, from: usize, to: usize) -> T {
            assert!(from <= to && to <= self.table[0].len() - 1);
            let lg = (32 - ((to - from + 1) as u32).leading_zeros() - 1) as usize;
            (self.func)(self.table[lg][from], self.table[lg][to + 1 - (1 << lg)])
        }
    }
}

fn gcd(a: u64, b: u64) -> u64 {
    if b == 0 {
        return a;
    }
    gcd(b, a % b)
}

fn main() {
    let mut s: String = String::new();
    std::io::stdin().read_to_string(&mut s).ok();
    let mut itr = s.trim().split_whitespace();
    let n: usize = itr.next().unwrap().parse().unwrap();
    let a: Vec<u64> = (0..n)
        .map(|_| itr.next().unwrap().parse().unwrap())
        .collect();

    let st = sparse_table::SparseTable::new(&a, 1, gcd);
    let mut ans = a.iter().filter(|&e| *e == 1).count();
    for i in 0..n {
        if st.get(i, n - 1) != 1 {
            continue;
        }
        let mut ng = i;
        let mut ok = n;
        while ok - ng > 1 {
            let mid = (ok + ng) >> 1;
            if st.get(i, mid) == 1 {
                ok = mid
            } else {
                ng = mid
            }
        }
        ans += n - ok;
    }
    println!("{}", ans);
}