import java.util.Scanner;

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

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