import java.io.*;
import java.util.*;

class Main{
  public static void main(String[] args) throws IOException{
    Scanner scan=new Scanner(System.in);

    int a=Integer.parseInt(scan.next());
    int b=Integer.parseInt(scan.next());
    int c=Integer.parseInt(scan.next());
    int count=0;

    for(int i=1;i<=c;i++){
      if( (c%i==0) && (a<=i) && (i<=b)){
        count++;
      }
    }
    System.out.println(count);
  }
} import java.io.*; io.* java import java.util.*; util.* java class Main{
  public static void main(String[] args) throws IOException{
    Scanner scan=new Scanner(System.in);

    int a=Integer.parseInt(scan.next());
    int b=Integer.parseInt(scan.next());
    int c=Integer.parseInt(scan.next());
    int count=0;

    for(int i=1;i<=c;i++){
      if( (c%i==0) && (a<=i) && (i<=b)){
        count++;
      }
    }
    System.out.println(count);
  }
} Main public static void main(String[] args) throws IOException{
    Scanner scan=new Scanner(System.in);

    int a=Integer.parseInt(scan.next());
    int b=Integer.parseInt(scan.next());
    int c=Integer.parseInt(scan.next());
    int count=0;

    for(int i=1;i<=c;i++){
      if( (c%i==0) && (a<=i) && (i<=b)){
        count++;
      }
    }
    System.out.println(count);
  } main {
    Scanner scan=new Scanner(System.in);

    int a=Integer.parseInt(scan.next());
    int b=Integer.parseInt(scan.next());
    int c=Integer.parseInt(scan.next());
    int count=0;

    for(int i=1;i<=c;i++){
      if( (c%i==0) && (a<=i) && (i<=b)){
        count++;
      }
    }
    System.out.println(count);
  } Scanner scan=new Scanner(System.in); scan new Scanner(System.in) int a=Integer.parseInt(scan.next()); a Integer.parseInt(scan.next()) Integer.parseInt Integer scan.next() scan.next scan int b=Integer.parseInt(scan.next()); b Integer.parseInt(scan.next()) Integer.parseInt Integer scan.next() scan.next scan int c=Integer.parseInt(scan.next()); c Integer.parseInt(scan.next()) Integer.parseInt Integer scan.next() scan.next scan int count=0; count 0 for(int i=1;i<=c;i++){
      if( (c%i==0) && (a<=i) && (i<=b)){
        count++;
      }
    } int i=1; int i=1; i 1 i<=c i c i++ i++ i {
      if( (c%i==0) && (a<=i) && (i<=b)){
        count++;
      }
    } {
      if( (c%i==0) && (a<=i) && (i<=b)){
        count++;
      }
    } if( (c%i==0) && (a<=i) && (i<=b)){
        count++;
      } (c%i==0) && (a<=i) && (i<=b) (c%i==0) && (a<=i) && (i<=b) (c%i==0) c%i c i 0 (a<=i) a i (i<=b) i b {
        count++;
      } count++ count System.out.println(count) System.out.println System.out System System.out count String[] args args
import java.io.*;
import java.util.*;

class Main{
  public static void main(String[] args) throws IOException{
    Scanner scan=new Scanner(System.in);

    int a=Integer.parseInt(scan.next());
    int b=Integer.parseInt(scan.next());
    int c=Integer.parseInt(scan.next());
    int count=0;

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