import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int n = Integer.parseInt(br.readLine());
		String[] sa = br.readLine().split(" ");
		long[] a = new long[n];
		for (int i = 0; i < n; i++) {
			a[i] = Long.parseLong(sa[i]);
		}
		br.close();

		long ans = 0;
		long now = 0;
		int l = 0;
		for (int r = 0; r < n; r++) {
			now = gcd(now, a[r]);
			if (now == 1) {
				long now2 = a[r];
				for (int k = r; k >= l; k--) {
					long next = gcd(now2, a[k]);
					if (next == 1) {
						ans += (long) (n - r) * (k - l + 1);
						l = k + 1;
						if (l > r) {
							now = 0;
						} else {
							now = now2;
						}
						break;
					}
					now2 = next;
				}
			}
		}
		System.out.println(ans);
	}

	static long gcd(long a, long b) {
		if (b == 0) {
			return a;
		} else {
			return gcd(b, a % b);
		}
	}
}