import java.util.Scanner;

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

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