import java.util.*;

public class Main {
    public static void main(String[] args)  throws java.io.IOException{
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        sc.close();
        int result = 0;
        while(a<=b){
            if(c%a==0){
                result++;
            }
            a++;
        }
        System.out.println(result);
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args)  throws java.io.IOException{
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        sc.close();
        int result = 0;
        while(a<=b){
            if(c%a==0){
                result++;
            }
            a++;
        }
        System.out.println(result);
    }
} Main public static void main(String[] args)  throws java.io.IOException{
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        sc.close();
        int result = 0;
        while(a<=b){
            if(c%a==0){
                result++;
            }
            a++;
        }
        System.out.println(result);
    } main {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        sc.close();
        int result = 0;
        while(a<=b){
            if(c%a==0){
                result++;
            }
            a++;
        }
        System.out.println(result);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int c = sc.nextInt(); c sc.nextInt() sc.nextInt sc sc.close() sc.close sc int result = 0; result 0 while(a<=b){
            if(c%a==0){
                result++;
            }
            a++;
        } a<=b a b {
            if(c%a==0){
                result++;
            }
            a++;
        } if(c%a==0){
                result++;
            } c%a==0 c%a c a 0 {
                result++;
            } result++ result a++ a System.out.println(result) System.out.println System.out System System.out result String[] args args public class Main {
    public static void main(String[] args)  throws java.io.IOException{
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        sc.close();
        int result = 0;
        while(a<=b){
            if(c%a==0){
                result++;
            }
            a++;
        }
        System.out.println(result);
    }
} public class Main {
    public static void main(String[] args)  throws java.io.IOException{
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        sc.close();
        int result = 0;
        while(a<=b){
            if(c%a==0){
                result++;
            }
            a++;
        }
        System.out.println(result);
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args)  throws java.io.IOException{
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        sc.close();
        int result = 0;
        while(a<=b){
            if(c%a==0){
                result++;
            }
            a++;
        }
        System.out.println(result);
    }
}