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

class Main {
	public static void main(String args[]) {
		InputStreamReader isr = new InputStreamReader(System.in);
		BufferedReader br = new BufferedReader(isr);

		try {
			String buf = br.readLine();
			StringTokenizer st = new StringTokenizer(buf);

			int a = Integer.parseInt(st.nextToken());
			int b = Integer.parseInt(st.nextToken());
			int c = Integer.parseInt(st.nextToken());
			int count = 0;
			for (int i=a;i<=b;i++) {
				if (c%i==0) count++;
			}
			System.out.println(count);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
} import java.io.*; io.* java import java.util.StringTokenizer; StringTokenizer java.util class Main {
	public static void main(String args[]) {
		InputStreamReader isr = new InputStreamReader(System.in);
		BufferedReader br = new BufferedReader(isr);

		try {
			String buf = br.readLine();
			StringTokenizer st = new StringTokenizer(buf);

			int a = Integer.parseInt(st.nextToken());
			int b = Integer.parseInt(st.nextToken());
			int c = Integer.parseInt(st.nextToken());
			int count = 0;
			for (int i=a;i<=b;i++) {
				if (c%i==0) count++;
			}
			System.out.println(count);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
} Main public static void main(String args[]) {
		InputStreamReader isr = new InputStreamReader(System.in);
		BufferedReader br = new BufferedReader(isr);

		try {
			String buf = br.readLine();
			StringTokenizer st = new StringTokenizer(buf);

			int a = Integer.parseInt(st.nextToken());
			int b = Integer.parseInt(st.nextToken());
			int c = Integer.parseInt(st.nextToken());
			int count = 0;
			for (int i=a;i<=b;i++) {
				if (c%i==0) count++;
			}
			System.out.println(count);
		} catch (Exception e) {
			e.printStackTrace();
		}
	} main {
		InputStreamReader isr = new InputStreamReader(System.in);
		BufferedReader br = new BufferedReader(isr);

		try {
			String buf = br.readLine();
			StringTokenizer st = new StringTokenizer(buf);

			int a = Integer.parseInt(st.nextToken());
			int b = Integer.parseInt(st.nextToken());
			int c = Integer.parseInt(st.nextToken());
			int count = 0;
			for (int i=a;i<=b;i++) {
				if (c%i==0) count++;
			}
			System.out.println(count);
		} catch (Exception e) {
			e.printStackTrace();
		}
	} InputStreamReader isr = new InputStreamReader(System.in); isr new InputStreamReader(System.in) BufferedReader br = new BufferedReader(isr); br new BufferedReader(isr) try {
			String buf = br.readLine();
			StringTokenizer st = new StringTokenizer(buf);

			int a = Integer.parseInt(st.nextToken());
			int b = Integer.parseInt(st.nextToken());
			int c = Integer.parseInt(st.nextToken());
			int count = 0;
			for (int i=a;i<=b;i++) {
				if (c%i==0) count++;
			}
			System.out.println(count);
		} catch (Exception e) {
			e.printStackTrace();
		} catch (Exception e) {
			e.printStackTrace();
		} Exception e {
			e.printStackTrace();
		} e.printStackTrace() e.printStackTrace e {
			String buf = br.readLine();
			StringTokenizer st = new StringTokenizer(buf);

			int a = Integer.parseInt(st.nextToken());
			int b = Integer.parseInt(st.nextToken());
			int c = Integer.parseInt(st.nextToken());
			int count = 0;
			for (int i=a;i<=b;i++) {
				if (c%i==0) count++;
			}
			System.out.println(count);
		} String buf = br.readLine(); buf br.readLine() br.readLine br StringTokenizer st = new StringTokenizer(buf); st new StringTokenizer(buf) int a = Integer.parseInt(st.nextToken()); a Integer.parseInt(st.nextToken()) Integer.parseInt Integer st.nextToken() st.nextToken st int b = Integer.parseInt(st.nextToken()); b Integer.parseInt(st.nextToken()) Integer.parseInt Integer st.nextToken() st.nextToken st int c = Integer.parseInt(st.nextToken()); c Integer.parseInt(st.nextToken()) Integer.parseInt Integer st.nextToken() st.nextToken st int count = 0; count 0 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 System.out.println(count) System.out.println System.out System System.out count String args[] args
import java.io.*;
import java.util.StringTokenizer;

class Main {
	public static void main(String args[]) {
		InputStreamReader isr = new InputStreamReader(System.in);
		BufferedReader br = new BufferedReader(isr);

		try {
			String buf = br.readLine();
			StringTokenizer st = new StringTokenizer(buf);

			int a = Integer.parseInt(st.nextToken());
			int b = Integer.parseInt(st.nextToken());
			int c = Integer.parseInt(st.nextToken());
			int count = 0;
			for (int i=a;i<=b;i++) {
				if (c%i==0) count++;
			}
			System.out.println(count);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}