public class Main {

    public static void main(String[] args) {
        final String line = readLine();
        System.out.println(calc(line));
    }

    protected static String calc(String input) {
        final int[] ia = split(input);

        final int a = ia[0];
        final int b = ia[1];
        final int c = ia[2];

        int count = 0;
        for (int i = a; i <= b; i++) {
            if ((c % i) == 0) {
                count++;
            }
        }

        return String.valueOf(count);
    }

    private static int[] split(String s) {
        final String[] s0 = s.split(" ");
        int[] ia = new int[s0.length];

        for (int i = 0; i < s0.length; i++) {
            ia[i] = Integer.parseInt(s0[i]);
        }

        return ia;
    }

    private static String readLine() {
        java.util.Scanner s = null;
        try {
            s = new java.util.Scanner(System.in);
            return s.nextLine();
        } finally {
            if (s != null) {
                s.close();
            }
        }
    }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz