import java.util.Scanner;

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=1;i*i<=c;i++){
            int d=c%i;
            if(d==0){
                if(a<=i&&i<=b)count++;
                if(i!=c/i&&a<=c/i&&c/i<=b)count++;
            }
        }
        System.out.println(count);
    }
}
 import java.util.Scanner; Scanner 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=1;i*i<=c;i++){
            int d=c%i;
            if(d==0){
                if(a<=i&&i<=b)count++;
                if(i!=c/i&&a<=c/i&&c/i<=b)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=1;i*i<=c;i++){
            int d=c%i;
            if(d==0){
                if(a<=i&&i<=b)count++;
                if(i!=c/i&&a<=c/i&&c/i<=b)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=1;i*i<=c;i++){
            int d=c%i;
            if(d==0){
                if(a<=i&&i<=b)count++;
                if(i!=c/i&&a<=c/i&&c/i<=b)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=1;i*i<=c;i++){
            int d=c%i;
            if(d==0){
                if(a<=i&&i<=b)count++;
                if(i!=c/i&&a<=c/i&&c/i<=b)count++;
            }
        } int i=1; int i=1; i 1 i*i<=c i*i i i c i++ i++ i {
            int d=c%i;
            if(d==0){
                if(a<=i&&i<=b)count++;
                if(i!=c/i&&a<=c/i&&c/i<=b)count++;
            }
        } {
            int d=c%i;
            if(d==0){
                if(a<=i&&i<=b)count++;
                if(i!=c/i&&a<=c/i&&c/i<=b)count++;
            }
        } int d=c%i; d c%i c i if(d==0){
                if(a<=i&&i<=b)count++;
                if(i!=c/i&&a<=c/i&&c/i<=b)count++;
            } d==0 d 0 {
                if(a<=i&&i<=b)count++;
                if(i!=c/i&&a<=c/i&&c/i<=b)count++;
            } if(a<=i&&i<=b)count++; a<=i&&i<=b a<=i a i i<=b i b count++ count if(i!=c/i&&a<=c/i&&c/i<=b)count++; i!=c/i&&a<=c/i&&c/i<=b i!=c/i&&a<=c/i&&c/i<=b i!=c/i i c/i c i a<=c/i a c/i c i c/i<=b c/i c i b 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=1;i*i<=c;i++){
            int d=c%i;
            if(d==0){
                if(a<=i&&i<=b)count++;
                if(i!=c/i&&a<=c/i&&c/i<=b)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=1;i*i<=c;i++){
            int d=c%i;
            if(d==0){
                if(a<=i&&i<=b)count++;
                if(i!=c/i&&a<=c/i&&c/i<=b)count++;
            }
        }
        System.out.println(count);
    }
} Main
import java.util.Scanner;

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=1;i*i<=c;i++){
            int d=c%i;
            if(d==0){
                if(a<=i&&i<=b)count++;
                if(i!=c/i&&a<=c/i&&c/i<=b)count++;
            }
        }
        System.out.println(count);
    }
}

