Factors of a Number

/*
 * Problem : List all factors of a number.
 * Input   : One positive integer.
 * Output  : All factors in ascending order on one line.
 * Approach: Test every number from 1 to n.
 * Time    : O(n)
 * Space   : O(k)
 * Java    : 8 or newer.
 */
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        long number = new Scanner(System.in).nextLong();
        StringBuilder result = new StringBuilder();

        // Step 1: Try every number from 1 to the number itself.
        for (long divisor = 1; divisor <= number; divisor++) {
            // Step 2: If the number divides without remainder, it is a factor.
            if (number % divisor == 0) {
                // Step 3: Add the factor to the result. Put one space between factors.
                if (result.length() > 0) {
                    result.append(" ");
                }
                result.append(divisor);
            }
        }

        // Step 4: Print all factors on one line.
        System.out.println(result);
    }
}