source_code: import java.io.OutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.PrintWriter;
  import java.util.InputMismatchException;
  import java.io.IOException;
  import java.util.TreeSet;
  import java.io.InputStream;
  
  /**
   * Built using CHelper plug-in
   * Actual solution is at the top
   *
   * @author beginner1010
   */
  public class Main {
      public static void main(String[] args) {
          InputStream inputStream = System.in;
          OutputStream outputStream = System.out;
          InputReader in = new InputReader(inputStream);
          PrintWriter out = new PrintWriter(outputStream);
          TaskA solver = new TaskA();
          solver.solve(1, in, out);
          out.close();
      }
  
      static class TaskA {
          public void solve(int testNumber, InputReader in, PrintWriter out) {
              TreeSet<Integer> set = new TreeSet<>();
              int n = in.nextInt();
              for (int i = 0; i < n; i++) {
                  int x = in.nextInt();
                  set.add(x);
              }
              int ans = 0;
              while (!set.isEmpty()) {
                  ans++;
                  int minimal = set.first();
                  int cur = minimal;
                  while (cur <= 100) {
                      set.remove(cur);
                      cur += minimal;
                  }
              }
              out.println(ans);
          }
  
      }
  
      static class InputReader {
          private byte[] buf = new byte[1024];
          private int curChar;
          private int numChars;
          private InputStream stream;
  
          public InputReader(InputStream stream) {
              this.stream = stream;
          }
  
          private boolean isWhitespace(int c) {
              return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
          }
  
          private int read() {
              if (numChars == -1)
                  throw new InputMismatchException();
              if (curChar >= numChars) {
                  curChar = 0;
                  try {
                      numChars = stream.read(buf);
                  } catch (IOException e) {
                      throw new InputMismatchException();
                  }
                  if (numChars <= 0)
                      return -1;
              }
              return buf[curChar++];
          }
  
          public int nextInt() {
              int c = read();
              while (isWhitespace(c))
                  c = read();
              int sgn = 1;
              if (c == '-') {
                  sgn = -1;
                  c = read();
              }
              int res = 0;
              do {
                  if (c < '0' || c > '9')
                      throw new InputMismatchException();
                  res *= 10;
                  res += c - '0';
                  c = read();
              } while (!isWhitespace(c));
              return res * sgn;
          }
  
      }
  }
  
  