1053700domain: NAppears in sequencesa(n) = n^4 + 5*n^2 + 4.at n=32A156798Numbers that are a divisor of the sum of their divisors to their own powers.at n=24A336892a(n) = Sum_{x_1|n, x_2|n, ... , x_n|n} gcd(x_1,x_2, ... ,x_n).at n=9A344140