import java.util.ArrayList;
import java.util.Scanner;

/**
 * Created 2017/06/01.
 */
public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    ArrayList<Integer> ary = new ArrayList<>();

    while (true) {
      int input = Integer.parseInt(sc.next());
      ary.add(input);
      if (ary.size() == 3) break;
    }

    int a = ary.get(0);
    int b = ary.get(1);
    int c = ary.get(2);
    int ans = 0;

    for (int i = a; i <= b; i++) {
      if (c % i == 0) {
        ans++;
      }
    }
    System.out.println(ans);
  }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz