import java.util.Scanner;

public class Main{
    public static void main(String argv[]){
	Scanner scan = new Scanner(System.in);

	int a = scan.nextInt();
	int b = scan.nextInt();
	int c = scan.nextInt();
	int i,count=0;
	for( i = b ; i >= a ;i-- )
	    {
		if( c % i == 0 )
		    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