What is associated with: 27316 degrees centigrade?

What is the first number? What is referred to by '2 4 10 16'? What is referred to by '273 celsius'? What is associated with: 27315 degrees c? Based on the clue '40 is the only reading on these 2 temperature scal...', what is the answer? What is associated with: 45967 degrees fahrenheit? Based on the clue 'aceous is one of these add ons', what is the answer? What is referred to by 'and hutch'?