import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.math.BigInteger;

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(" ");
		BigInteger[] a = new BigInteger[n];
		for (int i = 0; i < n; i++) {
			a[i] = new BigInteger(sa[i]);
		}
		br.close();

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