These are just the known values. There is no proof that this sequence is correct (in the usual sense that there are no other terms below the last term shown). - N. J. A. Sloane, Nov 07 2006
Factorization: 2^(n-1)*M(n)*3*5^2*13*31*139*277*3877*239 where M(n) is Mersenne Prime, n=3 or 5<n.
Table of n, a(n) for n=1..6.
Eric Weisstein's World of Mathematics, Rational Amicable Pair.
Sequence in context: A003941 A003934 A038362 * A204189 A317163 A051167
Adjacent sequences: A038360 A038361 A038362 * A038364 A038365 A038366