OFFSET
1,6
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
PROG
(Haskell) a240471 n = n * a000005 n `div` a000203 n
(PARI) a(n) = n*numdiv(n)\sigma(n); \\ Michel Marcus, Dec 02 2020
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Apr 06 2014
STATUS
approved