## Divisors of numbers

We'd like to generate a table of divisors and sums of divisors of all the numbers up to at least 120. So we need everyone to contribute at least three or four rows to the table. Download this file, then open and edit it as you would any text file (use Notepad or something like that). To add a row to the table, you can copy one of the rows (a group of lines beginning with <tr> and ending with </tr>), paste it in just before the </table> line at the end of the table, and then edit the entries.

Then save the file as text (with the same name it already has [divisors.html]) and upload it again. Be sure and identify yourself as the author of the rows you add.

In the table, D(n) stands for the number of divisors, and S(n) for the sum of all the divisors of the number n. The tricky one to input is the prime factorization, since you will need the <sup> and </sup> tags to make exponents in the factorization -- we'll use the * to indicate multiplication (see the factorization of 6 in the table)

 Number Prime factorization Divisors D(n) S(n) Author 1 1 1 1 1 Dr. D 2 2 1, 2 2 3 Dr. D 3 3 1, 3 2 4 Dr. D 4 22 1, 2, 4 3 7 Dr. D 5 5 1, 5 2 6 Dr. D 6 2 * 3 1, 2, 3, 6 4 12 Dr. D 7 7 1, 7 2 8 Dr. D 8 23 1, 2, 4, 8 4 15 Dr. D 9 32 1, 3, 9 3 13 Dr. D 10 2 * 5 1, 2, 5, 10 4 18 Dr. D 11 11 1, 11 2 12 Dr. D 12 22 * 3 1, 2, 3, 4, 6, 12 6 28 Dr. D