import java.util.Scanner;

public class Main{
    public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);

    		int a=sc.nextInt();
    		int b=sc.nextInt();
    		int c=sc.nextInt();
    		int y=0;

    		for(int x=a;x<=b;x++){
    			if(c%x==0){
    			y++;
    		}
    		}
    		System.out.println(y);
    		}
    		}
    		

/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