Question $2$ Part $1$: Factor A Number $(20$ marks$)$

A factor of a natural number N is another natural number Q which perfectly divides it$.$

In the file $"$a$1$q$2-1.$php$",$ write a PHP script which, given an input integer N received via POST request, returns an ordered list containing all the factors of N$.$ If the number received is negative, or if there is something else wrong with the incoming data, output an appropriate error message.

HINTS

All numbers are factored by $1$ and themselves.

All other factors cannot be greater than half the number they are factoring.