Smallest number m such that prime(n) is a factor of both m and sigma(m).

Terms

a(0) =6a(1) =6a(2) =40a(3) =28a(4) =473a(5) =117a(6) =1139a(7) =703a(8) =3151a(9) =5017a(10) =496a(11) =2701a(12) =6683a(13) =11051a(14) =13207a(15) =11183a(16) =20827a(17) =10309a(18) =26867a(19) =20093a(20) =18688a(21) =12403a(22) =27473a(23) =91136a(24) =18721a(25) =101909a(26) =63551a(27) =68587a(28) =71177a(29) =76501