Looking at the picture, one Overlord, one Lychguard, 2 Immortals, and 4 Warriors... The interesting part is that while the Space Marines appear to come in rainbow-colored plastic, the Necrons seem to be the standard models with a quick Leadbelcher spray.
Which makes one wonder how they got to those numbers. The Warriors are 4 to a standard sprue (which has a lot of wasted space and also comes with Scarabs), the Overlord has his own, so those are easy. I'm... decidedly less clear from memory how they're going to pack in Immortals and Lychguard, don't think it can be done from a normal sprue (without enough leftover bits to build MORE).
Any more experienced Necron players that can figure it out?
Ask not the Eldar a question, for they will give you three answers; all of which are true and horrifying to know.