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A083260 a(n) = gcd(A046523(n), A071364(n)). 4
1, 2, 2, 4, 2, 6, 2, 8, 4, 6, 2, 12, 2, 6, 6, 16, 2, 6, 2, 12, 6, 6, 2, 24, 4, 6, 8, 12, 2, 30, 2, 32, 6, 6, 6, 36, 2, 6, 6, 24, 2, 30, 2, 12, 12, 6, 2, 48, 4, 6, 6, 12, 2, 6, 6, 24, 6, 6, 2, 60, 2, 6, 12, 64, 6, 30, 2, 12, 6, 30, 2, 72, 2, 6, 6, 12, 6, 30, 2, 48, 16, 6, 2, 60, 6, 6, 6, 24, 2, 30, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
PROG
(PARI)
A046523(n) = { my(f=vecsort(factor(n)[, 2], , 4), p); prod(i=1, #f, (p=nextprime(p+1))^f[i]); }; \\ This function from Charles R Greathouse IV, Aug 17 2011
A071364(n) = { my(f = factor(n)); for (i=1, #f~, f[i, 1] = prime(i)); factorback(f); }; \\ This function from Michel Marcus, Jun 13 2014
A083260(n) = gcd(A046523(n), A071364(n)); \\ Antti Karttunen, Aug 24 2017
CROSSREFS
Sequence in context: A275365 A119655 A364949 * A284011 A275468 A046523
KEYWORD
nonn
AUTHOR
Labos Elemer, May 09 2003
STATUS
approved

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)