How interesting. But where do numbers (including perfect numbers) ultimately come from? Augustine, I have just reminded myself, believed that Platonic Forms had a real existence in the mind of God. Those Forms presumably included numbers, and presumably Gödel's incompleteness theorem applied to them even before they became open to human investigation. God could still 'understand it all' (including the Gödel bit) in the same way as he could create a universe which incorporated various elements of contingency and uncertainty but which was still 'very good' (Genesis 1.31)