import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner InData = new Scanner(System.in);
        int a = InData.nextInt();
        int b = InData.nextInt();
        int c = InData.nextInt();
        int Shang;
        int Yu;
        int Acc = 0;
        for(int n = a; n<=b; n++){
            Shang = c/n;
            Yu = c%n;
            if(Shang != 0 && Yu == 0){
                Acc++;

            }

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