#[derive(Debug, Clone)]
struct SWAG<T, F> {
    front: Vec<T>,
    back: Vec<T>,
    unit: T,
    operator: F,
    back_agg: T,
}

impl<T, F> SWAG<T, F> where
T: std::fmt::Debug + Copy,
F: Fn(T, T) -> T,
{
    fn new(unit: T, operator: F) -> Self {
        Self {
            front: vec![],
            back: vec![],
            unit: unit,
            operator: operator,
            back_agg: unit
        }
    }

    fn len(&self) -> usize {
        self.front.len() + self.back.len()
    }

    fn push(&mut self, val: T) {
        self.back.push(val);
        self.back_agg = (self.operator)(self.back_agg, val);
    }

    fn pop(&mut self) -> Option<T> {
        if self.front.is_empty() {
            while let Some(p) = self.back.pop() {
                let fagg = *self.front.last().unwrap_or(&self.unit);
                self.front.push((self.operator)(p, fagg));
            }
            self.back_agg = self.unit;
        }
        self.front.pop()
    }

    fn fold(&self) -> T {
        (self.operator)(*self.front.last().unwrap_or(&self.unit), self.back_agg)
    }
}

fn gcd(a: usize, b: usize) -> usize {
    fn _gcd(x: usize, y: usize) -> usize {
        if y == 0 { return x; }
        gcd(y, x%y)
    }
    _gcd(a.max(b), a.min(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 = String::new();
    std::io::stdin().read_line(&mut a).ok();
    let a: Vec<usize> = a.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();

    let mut swag = SWAG::new(0usize, |x, y| gcd(x, y));
    swag.push(a[0]);
    let mut result = 0usize;
    let mut ridx = 1usize;
    for _ in 0..n {
        while ridx < n && swag.fold() != 1 {
            swag.push(a[ridx]);
            ridx += 1;
        }
        result += n - ridx + if swag.fold() == 1 { 1 } else { 0 };
        swag.pop();
    }
    println!("{}", result);
}