30600708096domain: NAppears in sequencesNumbers k whose average divisor is nonintegral and divides k.at n=19A046999Numbers n for which sigma(n)/n = k+1/3 with integer k.at n=15A160320Numbers m such that g(m) = (m * tau(m) / sigma(m)), h(m) = (m * sigma(m)) / tau(m) and k(m) = (tau(m) * sigma(m)) / m are all integers.at n=15A333639