import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        TreeMap<Integer, Long> counts = new TreeMap<>();
        for (int i = 0; i < n; i++) {
            int x = sc.nextInt();
            Integer key = 0;
            while ((key = counts.higherKey(key)) != null) {
                int ans = getGCD(key, x);
                counts.put(ans, counts.getOrDefault(ans, 0L) + counts.get(key));
            }
            counts.put(x, counts.getOrDefault(x, 0L) + 1);
        }
        System.out.println(counts.getOrDefault(1, 0L));
    }
    
    static int getGCD(int x, int y) {
        if (x % y == 0) {
            return y;
        } else {
            return getGCD(y, x % y);
        }
    }
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String next() throws Exception {
        if (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
}