From what I remember, there was 40 numbers, 26 died pursuing Ijin (killed by 003), leaving 14 numbers (includin Ijin).

Anyway we know 10 of them (001, 002, 003, 004, 005, 006, 008, 016, 018 and 032) so at most we could encounter four more numbers if they didn't die during the time the camp was in chaos afer Ijin left