Numbers n such that (the sum of the divisors of n) plus (the sum of the squares of the divisors of n) plus (the sum of the cubes of the divisors of n) is a prime number.
A220586
Numbers n such that (the sum of the divisors of n) plus (the sum of the squares of the divisors of n) plus (the sum of the cubes of the divisors of n) is a prime number.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =18a(4) =25a(5) =100a(6) =484a(7) =1089a(8) =1156a(9) =2809a(10) =11449a(11) =42025a(12) =52900a(13) =63001a(14) =119716a(15) =120409a(16) =196249a(17) =218089a(18) =220900a(19) =280900a(20) =310249a(21) =407044a(22) =491401a(23) =594441a(24) =632025a(25) =651249a(26) =697225a(27) =1012036a(28) =1062961a(29) =1134225
External references
- oeis: A220586