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A007668 phi(n) divides sigma(n) and sigma(n)/n > sigma(m)/m for all m < n. 0
1, 2, 6, 12, 840, 332640 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
CROSSREFS
Sequence in context: A328448 A074180 A126293 * A089415 A282974 A181063
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)