import java.util.Scanner;
import java.util.*;

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

public class Main{
    public static void main(String[] args){
        int count=0;
        Scanner sc = new Scanner(System.in);
        int a= sc.nextInt();
        int b=sc.nextInt();
        int c=sc.nextInt();
        for(int i=a;i<=b;i++){
if(c%i==0) count++;
        }
        System.out.println(count);
            }
    }
