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

class Main {
    public static void main(String[] args) throws IOException {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        	String strArr[] = br.readLine().split(" ");
            int a=Integer.parseInt(strArr[0]);
            int b=Integer.parseInt(strArr[1]);
            int c=Integer.parseInt(strArr[2]);

            int kazu=0;
            int res=0;

            for(int i=a; i<=b; i++){
            	res=c%i;
            	if(res==0){
            		kazu++;
            	}
            	res=0;
            }
            System.out.println(kazu);
    }
}
/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