815730722

Appears in sequences

• a(n) = sigma_8(n), the sum of the 8th powers of the divisors of n.at n=12A013956
• Numerator of sum of -8th powers of divisors of n.at n=12A017679
• Cyclotomic polynomials at x=13.at n=16A019331
• Cyclotomic polynomials at x=-13.at n=16A020512
• Sum of eighth powers of unitary divisors.at n=12A034682
• Numbers n such that n^3 is palindromic in base 13.at n=22A046247
• a(n) = n^8 + 1.at n=13A060890
• a(0) = 0, a(n) = 13^(n-1) + 1.at n=9A141012
• a(n) = Sum_{d|n} (-1)^(d-1)*d^8.at n=12A321547
• a(n) = Sum_{d|n} (-1)^(n/d+1)*d^8.at n=12A321553
• a(n) = Sum_{d divides n} (-1)^(d + n/d) * d^8.at n=12A321564
• Sum of 8th powers of odd divisors of n.at n=12A321812
• Sum of 8th powers of odd divisors of n.at n=25A321812
• a(n) = Sum_{d|n, n/d odd} d^8 for n > 0.at n=12A321818
• a(n) = Sum_{d|n, d==1 mod 4} d^8 - Sum_{d|n, d==3 mod 4} d^8.at n=12A321824
• a(n) = Sum_{d|n, d==1 mod 4} d^8 - Sum_{d|n, d==3 mod 4} d^8.at n=25A321824
• a(n) = Sum_{d|n, n/d==1 (mod 4)} d^8 - Sum_{d|n, n/d==3 (mod 4)} d^8.at n=12A321832
• Sum of the 8th powers of the squarefree divisors of n.at n=12A351271
• a(n) = n^8 * Product_{p|n, p prime} (1 + 1/p^8).at n=12A351303
• Sum of the 8th powers of the odd proper divisors of n.at n=25A352036