25600065536domain: NAppears in sequencesa(n) = Sum_{d|n, n/d odd} d^8 for n > 0.at n=19A321818a(n) = Sum_{d|n, n/d==1 (mod 4)} d^8 - Sum_{d|n, n/d==3 (mod 4)} d^8.at n=19A321832Sum of the 8th powers of the divisor complements of the odd proper divisors of n.at n=19A352054