- #36
ddddd28
- 73
- 4
You misunderstood me. I meant that the number of factors of 25! is 23*11*7*4*3*2*2*2*2.
Since we also need to find how many odd factors there are, we don't need to include 23 in the product of 25!/2^22.
Since we also need to find how many odd factors there are, we don't need to include 23 in the product of 25!/2^22.