import java.io.*;

class Main{
	public static void main(String[] args)throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String str = br.readLine();
		String strArr[] = str.split(" ");
		int a, b, c, count=0;

		a = Integer.parseInt(strArr[0]);
		b = Integer.parseInt(strArr[1]);
		c = Integer.parseInt(strArr[2]);

		for(int i=a; i<=b; i++){
			for(int t=1; t*i<=c; t++){
				if(i*t==c)
					count++;
			}
		}

		System.out.println(count);
	}
}
/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