I have a question about bet sizing with premium hands. Let say:

UTG bet 4bb, CO calls 4bb (Let's assume that both UTG and CO have pocket pairs lower than QQ). I'm on the button with AA. How much should I raise so that it is incorrect for UTG and CO to call if they want to play for set.

I've heard something about 15:1 rule. I tried using the search but did not find anything. Anyone knows about it?