import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {

	public static void main(String[] args) {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		String str;
		String[] arrStr;
		int cntDivisor = 0;
		try {
			str = br.readLine();
			arrStr = str.split(" ");

			int s = Integer.parseInt(arrStr[0]);
			int e = Integer.parseInt(arrStr[1]);
			int chk = Integer.parseInt(arrStr[2]);

			for (int i =s; i <= e; i++) {
				if(chk%i ==0){
					cntDivisor++;
				}
			}

			System.out.println(cntDivisor);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}
/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