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

class Main {

	public static void main(String[] args) {

        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
            String inputData;
            inputData = reader.readLine();
			String[] strNumber = inputData.split(" ");
			int aa = Integer.parseInt(strNumber[0]);
			int bb = Integer.parseInt(strNumber[1]);
			int cc = Integer.parseInt(strNumber[2]);
			int count = 0;
			for(int i = aa ; i < bb + 1 ; i++){
				if(cc % i == 0){
					count++;
				}
			}

            System.out.println(count);

        } 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