Product of cumulative sums of divisors of n.

Terms

a(0) =1a(1) =3a(2) =4a(3) =21a(4) =6a(5) =216a(6) =8a(7) =315a(8) =52a(9) =432a(10) =12a(11) =80640a(12) =14a(13) =720a(14) =864a(15) =9765a(16) =18a(17) =176904a(18) =20a(19) =232848a(20) =1408a(21) =1512a(22) =24a(23) =149299200a(24) =186a(25) =2016a(26) =2080a(27) =460992a(28) =30a(29) =274827168