source_code: 
  
  import java.io.OutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.PrintWriter;
  import java.util.Arrays;
  import java.util.StringTokenizer;
  import java.io.IOException;
  import java.io.BufferedReader;
  import java.io.InputStreamReader;
  import java.io.InputStream;
  
  /**
   * Built using CHelper plug-in
   * Actual solution is at the top
   */
  public class Main {
      public static void main(String[] args) {
          InputStream inputStream = System.in;
          OutputStream outputStream = System.out;
          InputReader sc = new InputReader(inputStream);
          PrintWriter out = new PrintWriter(outputStream);
          Task solver = new Task();
          solver.solve(1, sc, out);
          out.close();
      }
  
      static class Task {
          public void solve(int testNumber, InputReader sc, PrintWriter out) {
              int n=sc.nextInt();
              int[] a=new int[n];
              boolean[] jud=new boolean[101];
              
              for(int i=0;i<n;i++)
              	a[i]=sc.nextInt();
              Arrays.sort(a);
              int ans=0;
              for(int i=0;i<n;i++) {
              	if(jud[a[i]])
              		continue;
              	ans++;
              	for(int j=a[i];j<=100;j+=a[i])
              		jud[j]=true;
              }
              out.println(ans);
          }
  
      }
  
      static class InputReader {
          public BufferedReader reader;
          public StringTokenizer tokenizer;
  
          public InputReader(InputStream stream) {
              reader = new BufferedReader(new InputStreamReader(stream), 32768);
              tokenizer = null;
          }
  
          public String next() {
              while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                  try {
                      tokenizer = new StringTokenizer(reader.readLine());
                  } catch (IOException e) {
                      throw new RuntimeException(e);
                  }
              }
              return tokenizer.nextToken();
          }
  
          public int nextInt() {
              return Integer.parseInt(next());
          }
  
          public long nextLong() {
              return Long.parseLong(next());
          }
  
      }
  }
  