import java.util.Scanner;
public class Main {
	void howmany(){
		int a,b,c,cnt;
		Scanner s = new Scanner(System.in);
		a = s.nextInt();
		b = s.nextInt();
		c = s.nextInt();
		cnt = 0;
		for(int i = a ; i <= b ; i++){
			if((c%i)==0){
				cnt++;
			}
		}
		System.out.println(cnt);
	}
	public static void main(String args[]){
		Main m = new Main();
		m.howmany();
	}
}
/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