Hey mate ,
The Answer is Zero
Hope it helped !
If there is a 20 square pieces of wood, I can make a rectangle by placing them side by side are by 24, by 12, by 8 and by 6. Thank you for posting your question I hope my answer helps.
For 49 It's 4*12 and 2*24 and 1*48 and for 64 it's 8*8 and 2*32
