Dear forum,
I would like to learn the programming-language of GAP fluently, but of course cannot do that without asking for help sometimes. So I wonder how I can find amicable chains with GAP. Firstly I already defined a function SumProper which calculates the sum of the proper divisors of a number. (The divisors of a number without the number itself). It so happens that SumProper(28)=28. Also SumProper(220)=284 and SumProper(284)=220. Now I would like to be able to find all such amicable chains like 220,284,220,... but also: 12496,14288,15472,14536,14264,12496,... using GAP. How could I do this? With thanks for any help. This way I (hopefully once ;) ) will learn to program GAP very well. Lisette _______________________________________________ Forum mailing list Forum@mail.gap-system.org http://mail.gap-system.org/mailman/listinfo/forum
