Numbers k for which sigma(k)/k = 12/5.

A347222

Numbers k for which sigma(k)/k = 12/5.

Terms

    a(0) =30a(1) =140a(2) =2480a(3) =6200a(4) =40640a(5) =167751680a(6) =42949345280a(7) =687193456640

External references