There's a known result on the maximum of sigma(n)/n, something like log(n). --Rich ________________________________________ From: math-fun-bounces@mailman.xmission.com [math-fun-bounces@mailman.xmission.com] on behalf of Richard Guy [rkg@cpsc.ucalgary.ca] Sent: Tuesday, November 08, 2011 1:19 PM To: David Wilson Cc: Math Fun Subject: Re: [math-fun] Question about amicable numbers David, Did you ever get any response to this? Answers, anyone? R. On Mon, 1 Aug 2011, David Wilson wrote:

Is there an upper bound to the ratio of amicable numbers? To the ratio of maximum and minimum of an amicable chain?

_______________________________________________ math-fun mailing list math-fun@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun

_______________________________________________ math-fun mailing list math-fun@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun