import java.util.Scanner;
public class Main {
 public static void main(String[] args){
     Scanner scanner = new Scanner(System.in);
          int j = 0;
          int a = scanner.nextInt();
          int b = scanner.nextInt();
          int c = scanner.nextInt();
          for(int i=a;i<=b;i++){
              int x=c%i;
              if(x==0){
                   j++;
              }
          }      
        System.out.println(j);      
}
}
/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