Greatest common divisor of multiperfect numbers and their totient.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =96a(6) =64a(7) =864a(8) =72a(9) =1536a(10) =252a(11) =69120a(12) =4096a(13) =86400a(14) =4608a(15) =256a(16) =768a(17) =24576a(18) =65536a(19) =570240a(20) =217728a(21) =691200a(22) =81920a(23) =1105920a(24) =262144a(25) =245760a(26) =516096a(27) =9676800a(28) =26544672a(29) =50181120