This repo contains a re-typed copy of
Terry Tao, Perfect Numbers, Trigon (School Mathematics Journal of the Mathematical Association of South Australia) 21 (3), Nov. 1983, p. 7.
Along with a working copy of the C64 BASIC code therein. The code as presented in the article has a typo, and also uses a PETSCII character not found in our modern ASCII-based character set (the 'up arrow' ↑ in the original code occupies the same position as our modern caret ^), so the code files are not identical to that in the article.
You will need a C64 emulator or similar. I tested the code on my Mac using https://github.com/mist64/cbmbasic