import java.util.Scanner;

class Main {

	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		boolean bl = true;
		int a=0,b=0,c=0;
		int count = 0;

		while(bl){
			a = stdIn.nextInt();
			b = stdIn.nextInt();
			c = stdIn.nextInt();

			if((a >= 1 && a <= 10000) && (b >= 1 && b <= 10000) && (c >= 1 && c <= 10000) && (a <= b)){
				break;
			}
		}
		while(a <= b){
			if(c % a == 0){
				count++;
			}
			a++;
		}
		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