A287026 - OEIS

The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.

The OEIS is supported by the many generous donors to the OEIS Foundation.

A287026

List of pairs of amicable numbers (m, n) with record value of m/n.

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	`Amiram Eldar, Table of n, a(n) for n = 1..44` `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...` `5462337996254147968/5462338103823900032 = 0.99999998...`
	CROSSREFS	`Cf. A063990, A287011.` `Cf. A259180 (amicable pairs).` `Sequence in context: A273259 A262624 A262622 * A233538 A328063 A328065` `Adjacent sequences: A287023 A287024 A287025 * A287027 A287028 A287029`
	KEYWORD	`nonn,tabf`
	AUTHOR	`Amiram Eldar, Aug 31 2017`
	STATUS	`approved`

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 15 22:47 EDT 2024. Contains 372549 sequences. (Running on oeis4.)