Numbers k such that sigma(k) = 2k + Omega(k), where Omega(n) is the number of prime divisors of n (with repetition).

A063788

Numbers k such that sigma(k) = 2k + Omega(k), where Omega(n) is the number of prime divisors of n (with repetition).

Terms

    a(0) =18a(1) =88a(2) =4030a(3) =5830a(4) =518656a(5) =13174976a(6) =134094848a(7) =2146926592

External references