In response to http://list.seqfan.eu/pipermail/seqfan/2010-February/003707.html I packed some of these aliquot graphs into http://www.strw.leidenuniv.nl/~mathar/public/mathar20100305.pdf Of course, the graphs with many nodes are clipped, and, quoting Elise, Beethoven et al, there is nothing we can do about it. Richard Mathar