OFFSET
1,1
COMMENTS
If p is an odd prime, then 8*p is a term. - Amiram Eldar, Apr 17 2024
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000 (terms 1..1000 from Harry J. Smith)
EXAMPLE
k = 18: 18/d(18) = 3 a prime.
MATHEMATICA
Select[Range[1000], PrimeQ[#/DivisorSigma[0, #]]&] (* Harvey P. Dale, Sep 01 2014 *)
PROG
(PARI) ok(m)={my(d=numdiv(m)); m%d==0 && isprime(m/d)}
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Jason Earls, Aug 05 2001
STATUS
approved