import java.util.Scanner;

class Main{
  public static void main(String[] arg){
  	int a, b, c, cnt=0;
  	Scanner in = new Scanner(System.in);
  	a = in.nextInt();
  	b = in.nextInt();
  	c = in.nextInt();
  	for(int i=a; i<=b; i++){
  		if(c/i > 0 && c%i == 0){
  			cnt++;
  		}
  	}
  	System.out.println(cnt);
	}
}
/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