OFFSET
1,2
COMMENTS
See A051281 for numbers m such that sigma(m) = tau(m)^k where k = integer.
a(n) = 0 for n = 76, 81, ...
LINKS
Rémy Sigrist, PARI program for A349007
EXAMPLE
a(4) = 2667 because 2667 is the largest number m such that sigma(m) = tau(m)^4; sigma(2667) = 4096 = tau(2667)^4 = 8^4.
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn
AUTHOR
Jaroslav Krizek, Nov 05 2021
STATUS
approved