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A287026 List of pairs of amicable numbers (m, n) with record value of m/n. 2
220, 284, 1184, 1210, 6232, 6368, 10744, 10856, 66928, 66992, 16137628, 16150628, 28118032, 28128368, 766292835, 766512285, 1930301618, 1930741582, 4000783984, 4001351168, 44303273584, 44307987968, 85617896265, 85625175735, 161899964416, 161905117184 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The 2 members in each pair are adjacent to each other in the sequence.

The pairs were found using Sergei Chernykh's Amicable pair list. There are 21 pairs with lesser member < 10^18.

LINKS

Table of n, a(n) for n=1..26.

Sergei Chernykh, Amicable pairs list.

Shyam Sunder Gupta, Amicable Numbers.

EXAMPLE

The ratios m/n are

                 220/284                = 0.7746...

                1184/1210               = 0.9785...

                6232/6368               = 0.9786...

               10744/10856              = 0.9896...

               66928/66992              = 0.9990...

            16137628/16150628           = 0.9991...

            28118032/28128368           = 0.9996...

           766292835/766512285          = 0.99971...

          1930301618/1930741582         = 0.99977...

          4000783984/4001351168         = 0.99985...

         44303273584/44307987968        = 0.99989...

         85617896265/85625175735        = 0.99991...

        161899964416/161905117184       = 0.99996...

        456280713808/456281771312       = 0.999997...

      52326552030976/52326637800704     = 0.999998...

    1132213192149585/1132213862340015   = 0.9999994...

   27117998061385216/27118008762013184  = 0.99999960...

  226615161368838645/226615243086790155 = 0.99999963...

  286707053950093312/286707152546674688 = 0.99999965...

  692760387785689984/692760539319737216 = 0.99999978...

  794879833279366144/794879862664408064 = 0.99999996...

CROSSREFS

Cf. A063990, A287011.

Cf. A259180 (amicable pairs).

Sequence in context: A273259 A262624 A262622 * A233538 A287011 A157107

Adjacent sequences:  A287023 A287024 A287025 * A287027 A287028 A287029

KEYWORD

nonn,tabf

AUTHOR

Amiram Eldar, Aug 31 2017

STATUS

approved

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Last modified June 23 09:44 EDT 2018. Contains 305694 sequences. (Running on oeis4.)