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A180326 The non-common part of the smaller number of an amicable pair. 2
55, 592, 655, 1255, 779, 1343, 117, 1081, 685, 4183, 497, 85, 7975, 2233, 209, 7648, 17708, 14231, 10741, 11017, 23171, 4471, 70135, 77155, 22825, 44551, 27341, 4786, 31441, 893, 75049, 76241, 78023, 79453, 80417, 166991, 90763, 7645, 54982, 112277 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

All terms are composite numbers. Very few duplicates occur: for the amicable numbers less than 10^14, a number appears at most twice.

LINKS

T. D. Noe, Table of n, a(n) for n=1..10000

FORMULA

a(n) = A002025(n) / gcd(A002025(n),A002046(n)) = A002025(n) / A061469(n).

CROSSREFS

Cf. A180327 (non-common part of the larger number of an amicable pair)

Sequence in context: A183320 A185028 A222797 * A119085 A119170 A119228

Adjacent sequences:  A180323 A180324 A180325 * A180327 A180328 A180329

KEYWORD

nonn

AUTHOR

T. D. Noe, Sep 07 2010

STATUS

approved

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Last modified April 10 23:13 EDT 2021. Contains 342877 sequences. (Running on oeis4.)