Numbers n such that sopfr(n) and d(n) are both perfect numbers.

Terms

a(0) =338a(1) =2496a(2) =3520a(3) =153280a(4) =508096a(5) =678592a(6) =1162432a(7) =1461952a(8) =2130112a(9) =2475712a(10) =2595520a(11) =2959552a(12) =3042496a(13) =3388096a(14) =3443392a(15) =3581632a(16) =3733696a(17) =3742912a(18) =3744873a(19) =5713173a(20) =9492309a(21) =11912896a(22) =14767353a(23) =15009472a(24) =18021609a(25) =21703125