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