import java.io.*;

class Main
{
    public static void main (String[ ] args) throws Exception
    {
        BufferedReader br = new BufferedReader (new InputStreamReader (System.in));
        //StringBuffer sb = new StringBuffer();
        
        String[] strAry = (br.readLine()).split(" ");
        int a = Integer.parseInt(strAry[0]);
        int b = Integer.parseInt(strAry[1]);
        int c = Integer.parseInt(strAry[2]);
        
        int cnt = 0;
        for(int i = a; i <= b; i++)
        {
            if(0 == (c % i))
            {
                cnt++;
            }
        }
        System.out.println(cnt);
    }
}
/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