Smallest number m having exactly n divisors d with sqrt(m/2) <= d < sqrt(2*m).

Terms

a(0) =3a(1) =1a(2) =6a(3) =72a(4) =120a(5) =1800a(6) =840a(7) =3600a(8) =2520a(9) =28800a(10) =10080a(11) =88200a(12) =27720a(13) =259200a(14) =50400a(15) =176400a(16) =83160a(17) =352800a(18) =138600a(19) =3484800a(20) =277200a(21) =1411200a(22) =360360a(23) =2822400a(24) =831600a(25) =3175200a(26) =720720a(27) =6350400a(28) =1663200a(29) =31363200