import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.lang.Math;

public class Main {
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder st = new StringBuilder();
        
        String[] ary = new String[3];
        int count = 0;
        
        ary = br.readLine().split(" ");
        int a = Integer.parseInt(ary[0]);
        int b = Integer.parseInt(ary[1]);
        int c = Integer.parseInt(ary[2]);
        
        for(int i = a; i <= b; i++){
            if(c % i == 0){
                count++;
            }
        }
        
        System.out.println(count);
    }
} import java.io.BufferedReader; BufferedReader java.io import java.io.InputStreamReader; InputStreamReader java.io import java.lang.Math; Math java.lang public class Main {
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder st = new StringBuilder();
        
        String[] ary = new String[3];
        int count = 0;
        
        ary = br.readLine().split(" ");
        int a = Integer.parseInt(ary[0]);
        int b = Integer.parseInt(ary[1]);
        int c = Integer.parseInt(ary[2]);
        
        for(int i = a; i <= b; i++){
            if(c % i == 0){
                count++;
            }
        }
        
        System.out.println(count);
    }
} Main public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder st = new StringBuilder();
        
        String[] ary = new String[3];
        int count = 0;
        
        ary = br.readLine().split(" ");
        int a = Integer.parseInt(ary[0]);
        int b = Integer.parseInt(ary[1]);
        int c = Integer.parseInt(ary[2]);
        
        for(int i = a; i <= b; i++){
            if(c % i == 0){
                count++;
            }
        }
        
        System.out.println(count);
    } main {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder st = new StringBuilder();
        
        String[] ary = new String[3];
        int count = 0;
        
        ary = br.readLine().split(" ");
        int a = Integer.parseInt(ary[0]);
        int b = Integer.parseInt(ary[1]);
        int c = Integer.parseInt(ary[2]);
        
        for(int i = a; i <= b; i++){
            if(c % i == 0){
                count++;
            }
        }
        
        System.out.println(count);
    } BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) StringBuilder st = new StringBuilder(); st new StringBuilder() String[] ary = new String[3]; ary new String[3] 3 int count = 0; count 0 ary = br.readLine().split(" ") ary br.readLine().split(" ") br.readLine().split br.readLine() br.readLine br " " int a = Integer.parseInt(ary[0]); a Integer.parseInt(ary[0]) Integer.parseInt Integer ary[0] ary 0 int b = Integer.parseInt(ary[1]); b Integer.parseInt(ary[1]) Integer.parseInt Integer ary[1] ary 1 int c = Integer.parseInt(ary[2]); c Integer.parseInt(ary[2]) Integer.parseInt Integer ary[2] ary 2 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) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder st = new StringBuilder();
        
        String[] ary = new String[3];
        int count = 0;
        
        ary = br.readLine().split(" ");
        int a = Integer.parseInt(ary[0]);
        int b = Integer.parseInt(ary[1]);
        int c = Integer.parseInt(ary[2]);
        
        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) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder st = new StringBuilder();
        
        String[] ary = new String[3];
        int count = 0;
        
        ary = br.readLine().split(" ");
        int a = Integer.parseInt(ary[0]);
        int b = Integer.parseInt(ary[1]);
        int c = Integer.parseInt(ary[2]);
        
        for(int i = a; i <= b; i++){
            if(c % i == 0){
                count++;
            }
        }
        
        System.out.println(count);
    }
} Main
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.lang.Math;

public class Main {
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder st = new StringBuilder();
        
        String[] ary = new String[3];
        int count = 0;
        
        ary = br.readLine().split(" ");
        int a = Integer.parseInt(ary[0]);
        int b = Integer.parseInt(ary[1]);
        int c = Integer.parseInt(ary[2]);
        
        for(int i = a; i <= b; i++){
            if(c % i == 0){
                count++;
            }
        }
        
        System.out.println(count);
    }
}