But with that, sense of the numbers given is still lacking. For example, if each one is more than one organism, that'd at least double the number to 274 because of brick amount. Also, as seen when it smashes the tree in the lower image, the "blocks" can separate and be independent (and they must emit a strong magnetic field to be able to swing and hold pattern like they do). And each cell of a multi cellular organism isn't necessarily considered a different organism, but is still considered alive.
There is still much we don't know about this majestic Stack+Attack UB-Assembly...