Numbers k such that the number of divisors of k and sum of squares of divisors of k are relatively prime.

A046679

Numbers k such that the number of divisors of k and sum of squares of divisors of k are relatively prime.

Terms

    a(0) =1a(1) =2a(2) =8a(3) =9a(4) =16a(5) =18a(6) =64a(7) =72a(8) =81a(9) =128a(10) =144a(11) =625a(12) =729a(13) =1024a(14) =1152a(15) =1296a(16) =1458a(17) =2401a(18) =4096a(19) =5184a(20) =5625a(21) =5832a(22) =6561a(23) =8192a(24) =9216a(25) =10000a(26) =11664a(27) =13122a(28) =15625a(29) =21609

External references