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A156099 Smallest number m such that prime(n) is a factor of both m and sigma(m). 1
6, 6, 40, 28, 473, 117, 1139, 703, 3151, 5017, 496, 2701, 6683, 11051, 13207, 11183, 20827, 10309, 26867, 20093, 18688, 12403, 27473, 91136, 18721, 101909, 63551, 68587, 71177, 76501, 8128, 68513, 74939, 38503, 221861, 273461, 49141, 159251 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Donovan Johnson, Table of n, a(n) for n=1..5000

EXAMPLE

a(20) = 20093. prime(20) = 71. 20093/71 = 283. sigma(20093)/71 = 288.

CROSSREFS

Cf. A000040, A000203.

Sequence in context: A244957 A186982 A196075 * A278435 A279333 A278734

Adjacent sequences:  A156096 A156097 A156098 * A156100 A156101 A156102

KEYWORD

nonn

AUTHOR

Donovan Johnson, Feb 04 2009

STATUS

approved

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Last modified April 21 17:29 EDT 2021. Contains 343156 sequences. (Running on oeis4.)