38974320domain: NAppears in sequencesa(n) = (n^1 + 1!)*(n^2 + 2!)*(n^3 + 3!)*(n^4 + 4!)/2!.at n=6A131528a(n) is the smallest number with exactly n divisors that are Moran numbers, or -1 if no such number exists.at n=28A333457