Nonprime numbers k such that k | (sigma(k) - Sum_{j=1..m}{sigma(k) mod d_j}), where d_j is one of the m divisors of k.

A282775

Nonprime numbers k such that k | (sigma(k) - Sum_{j=1..m}{sigma(k) mod d_j}), where d_j is one of the m divisors of k.

Terms

    a(0) =1a(1) =6a(2) =28a(3) =120a(4) =228a(5) =496a(6) =672a(7) =8128a(8) =30240a(9) =32760a(10) =125640a(11) =501888a(12) =523776a(13) =1207944a(14) =2178540a(15) =23569920a(16) =29720448a(17) =33550336a(18) =45532800a(19) =142990848a(20) =459818240a(21) =1379454720a(22) =1476304896a(23) =8589869056a(24) =14182439040a(25) =31998395520a(26) =43861478400a(27) =51001180160

External references