Re: Amicable numbers in Nim and a few questions

[def]

Last I tested ICC worked with --cc:gcc --gcc.exe:icc --gcc.linkerexe:icc (but I 
see some ICC defines now, so that might have changed) Some work for 
auto-vectorization was still needed though: 
[https://github.com/nim-lang/Nim/issues/1797](https://github.com/nim-lang/Nim/issues/1797)