What happens if an organ has one stop which is distributed throughout several divisions at multiple pitch levels? That's what they call unit organ or multiplex system. This way you can have an organ of considerable size with only a handful of stops.
I played a 4 rank, 44 stop, 3 manual and pedal organ once.The 4 ranks were one from each of the 4 stop families - a principal, a flute, a viola, and a trompette.
Although such organs are much cheaper to build, the flip side of multiplication is of course that there is not so much of variety in tone color (the pipes of 16', 8', 4' and 2' principals belong to the same principal stop).
Number of ranks matter a lot more than it may seem at first.