import java.util.Scanner;
class Main {
    public void kami() {
                Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int x,j = 0;
		
		for(int i = a; i <= b; i++){
			x = c % i;
			if(x == 0){
				j++;
			}
			
		}
		System.out.println(j);

    }
	public static void main(String[] args) {
    new Main().kami();
	}

}
/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