Stuck even after looking at forum posts  Go to the Training: Encodings I challenge

I am completely stuck here. I was looking at the other posts on this topic, and I get that it has something to do with divisors. I counted up all of the digits (441) which has divisors of 1, 3, 7, 9, 21, 49, 63, 147, and 441. I also counted up the digits in each of the rows (32 and 25 for the last one), and got divisors of 1, 2, 4, 8, 16, 32 (32) and 1, 5, 25 (25). I still don't know what to do with these, nor do I know which set of divisors to use, or even if I have the right divisors. Any help you guys can give would be appreciated! Thanks

You have the right divisors - try and think about how many possible characters you could work with each divisor. Some are probably too small - e.g. 3 only gives you 000 - 111 possible characters.