Lets see, you need to call 16 to win 36, so 16/(16+36) = 30%. So thats how much equity we need.

Hand 0: 34.106% 33.69% 00.41% 6923328 84732.00 { AKs }
Hand 1: 65.894% 65.48% 00.41% 13454856 84732.00 { KK }

If this was a live game and he flipped his KK after shoving you would still call due to pot odds.

Hand 0: 23.123% 22.60% 00.52% 9288900 213750.00 { AKs }
Hand 1: 76.877% 76.36% 00.52% 31378896 213750.00 { KK+ }

If we put him on a super tight range of only AA/KK we can fold, but again if thats his range the 4-bet is obviously bad.

Hand 0: 41.904% 22.62% 19.28% 32535636 27736416.00 { AKs }
Hand 1: 58.096% 38.81% 19.28% 55825068 27736416.00 { QQ+, AKs, AKo }

Against a somewhat reasonable range its a very easy call, and obviously from here on the wider his range gets the easier the call.

This is the kind of thing thats worth running through yourself and getting an idea of equity v's ranges.