OFFSET
1,2
COMMENTS
LINKS
Giovanni Resta, Table of n, a(n) for n = 1..11 (from A007691 data)
EXAMPLE
6 is a term because lcm(tau(6), 6) = lcm(4, 6) = 12 = sigma(6).
PROG
(Magma) [n: n in [1..100000] | LCM(NumberOfDivisors(n), n) eq SumOfDivisors(n)]
CROSSREFS
KEYWORD
nonn,hard
AUTHOR
Jaroslav Krizek, Mar 04 2019
EXTENSIONS
a(4)-a(8) computed from A007691 data by Giovanni Resta, Mar 05 2019
STATUS
approved