import java.io.*;

class Main
{
  public static void main(String[] args) throws IOException
  {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String str[] = br.readLine().split(" ",0);
    int n[] = new int[str.length];
    int count = 0;

    for(int i = 0; i < str.length; i++) n[i] = Integer.parseInt(str[i]);

    for(int x = n[0]; x <= n[1]; x++){
      if(n[2] % x == 0) count++;
    }
    System.out.println(count);
  }
}
/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