import java.util.Scanner;

class Main{
        public static void main(String args[]){
                Scanner scan = new Scanner(System.in);
                int val1=scan.nextInt();
                int val2=scan.nextInt();
                int val3=scan.nextInt();
                int count=0;
                for(int i=val1;i<=val2;i++){
                        if(val3%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