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A339679 Larger of amicable pair (a, b) such that the sum of their number of divisors d(a) + d(b) sets a new record. 2
284, 1210, 6368, 10856, 14595, 71145, 87633, 525915, 1438983, 1870245, 5120595, 6088905, 11791935, 14084763, 36939357, 207429525, 234587199, 662939925, 1337154465, 2450161791, 4024393191, 4785272037, 10162493523, 38437212933, 160412122575, 229777289469, 248806975131 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
The terms are ordered according to their lesser counterparts (A339678).
The terms were calculated using data from Chernykh's site.
LINKS
Sergei Chernykh, Amicable pairs list.
MATHEMATICA
s[n_] := DivisorSigma[1, n] - n; dm = 0; seq = {}; Do[m = s[n]; If[m > n && s[m] == n && (d = Plus @@ DivisorSigma[0, {n, m}]) > dm, dm = d; AppendTo[seq, m]], {n, 1 , 10^6}]; seq
CROSSREFS
Sequence in context: A234970 A260087 A002046 * A339683 A343917 A143191
KEYWORD
nonn
AUTHOR
Amiram Eldar, Dec 12 2020
STATUS
approved

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Last modified April 21 00:02 EDT 2024. Contains 371850 sequences. (Running on oeis4.)