OFFSET
1,2
LINKS
Harry J. Smith, Table of n, a(n) for n = 1..1000
EXAMPLE
d(sigma(5)) = d(6) = 4.
MATHEMATICA
Table[DivisorSigma[0, DivisorSigma[1, n]], {n, 1, 80}] (* Carl Najafi, Aug 16 2011 *)
PROG
(PARI) for(n=1, 120, print(numdiv(sigma(n))))
(PARI) { for (n=1, 1000, write("b062068.txt", n, " ", numdiv(sigma(n))) ) } \\ Harry J. Smith, Jul 31 2009
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Amarnath Murthy, Jun 13 2001
EXTENSIONS
Corrected and extended by Jason Earls, Jun 16 2001
STATUS
approved