public class Main {

	public void run(java.io.InputStream in, java.io.PrintStream out) {
		final java.util.Scanner sc = new java.util.Scanner(in);
		final int a = sc.nextInt();
		final int b = sc.nextInt();
		final int c = sc.nextInt();
		int res = 0;
		sc.close();
		
		for (int i = a; i <= b; ++i) {
			if (c % i == 0) {
				res += 1;
			}
		}
		out.println(res);
	}
	
	public static void main(String[] args) {
		(new Main()).run(System.in, System.out);
	}

}
/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