(Product k^k) * (Sum 1/k^k) where both the sum and product are over those positive integers k that divide n.

A057642

(Product k^k) * (Sum 1/k^k) where both the sum and product are over those positive integers k that divide n.

Terms

    a(0) =1a(1) =5a(2) =28a(3) =1284a(4) =3126a(5) =6485292a(6) =823544a(7) =21541946368a(8) =10847773719a(10) =285311670612

External references