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%I #5 Mar 30 2012 17:35:01
%S 2,6,60,1140,22230,778050,28787850,1237877550,82937795850,
%T 6054459097050,802693813972050,126022928793611850
%N Smallest number m such that m has exactly n distinct prime factors and sigma(m) has exactly n distinct prime factors.
%C a(13) <= 20541737393358731550. a(14) <= 3553720569051060558150. - Donovan Johnson, Jul 13 2011
%e a(9) = 82937795850 = 2*3^2*5^2*7*13*19*37*43*67 (9 distinct prime factors). Sigma(82937795850) = 307906959360 = 2^11*3*5*7*11*13*17*19*31 (9 distinct prime factors).
%Y Cf. A000203, A001221.
%K nonn
%O 1,1
%A _Donovan Johnson_, Dec 13 2008
%E a(12) from _Donovan Johnson_, Jul 13 2011
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