import java.io.File;
import java.io.IOException;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Deque;
import java.util.Scanner;
 
/*
 * メモ
 * Scanner:nextは空白か改行までの単語
 * String[][] c = new String[h][w];
 * TemplateMain,"template_input.txt"
 * 0.5 == 1.0/2
 * Integer.valueOf(char)はダメ、(String)
 */
 
public class Main {
 
	public static void main(String[] args) throws IOException {
		//File file = new File("input.txt");
		//Scanner sc = new Scanner(file);
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int count = 0;
		
		for(int i = a; i <= b; i++){
			if(i > c) break;
			if(c % i == 0) count++;
		}
		System.out.println(count);
	}
} import java.io.File; File java.io import java.io.IOException; IOException java.io import java.util.ArrayDeque; ArrayDeque java.util import java.util.ArrayList; ArrayList java.util import java.util.Deque; Deque java.util import java.util.Scanner; Scanner java.util public class Main {
 
	public static void main(String[] args) throws IOException {
		//File file = new File("input.txt");
		//Scanner sc = new Scanner(file);
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int count = 0;
		
		for(int i = a; i <= b; i++){
			if(i > c) break;
			if(c % i == 0) count++;
		}
		System.out.println(count);
	}
} Main public static void main(String[] args) throws IOException {
		//File file = new File("input.txt");
		//Scanner sc = new Scanner(file);
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int count = 0;
		
		for(int i = a; i <= b; i++){
			if(i > c) break;
			if(c % i == 0) count++;
		}
		System.out.println(count);
	} main {
		//File file = new File("input.txt");
		//Scanner sc = new Scanner(file);
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int count = 0;
		
		for(int i = a; i <= b; i++){
			if(i > c) break;
			if(c % i == 0) count++;
		}
		System.out.println(count);
	} 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 int count = 0; count 0 for(int i = a; i <= b; i++){
			if(i > c) break;
			if(c % i == 0) count++;
		} int i = a; int i = a; i a i <= b i b i++ i++ i {
			if(i > c) break;
			if(c % i == 0) count++;
		} {
			if(i > c) break;
			if(c % i == 0) count++;
		} if(i > c) break; i > c i c break; 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) throws IOException {
		//File file = new File("input.txt");
		//Scanner sc = new Scanner(file);
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int count = 0;
		
		for(int i = a; i <= b; i++){
			if(i > c) break;
			if(c % i == 0) count++;
		}
		System.out.println(count);
	}
} public class Main {
 
	public static void main(String[] args) throws IOException {
		//File file = new File("input.txt");
		//Scanner sc = new Scanner(file);
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int count = 0;
		
		for(int i = a; i <= b; i++){
			if(i > c) break;
			if(c % i == 0) count++;
		}
		System.out.println(count);
	}
} Main
import java.io.File;
import java.io.IOException;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Deque;
import java.util.Scanner;
 
/*
 * メモ
 * Scanner:nextは空白か改行までの単語
 * String[][] c = new String[h][w];
 * TemplateMain,"template_input.txt"
 * 0.5 == 1.0/2
 * Integer.valueOf(char)はダメ、(String)
 */
 
public class Main {
 
	public static void main(String[] args) throws IOException {
		//File file = new File("input.txt");
		//Scanner sc = new Scanner(file);
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int count = 0;
		
		for(int i = a; i <= b; i++){
			if(i > c) break;
			if(c % i == 0) count++;
		}
		System.out.println(count);
	}
}
