A351750 a(n) = Sum_{p|n, p prime} p * sigma_p(p).

0, 10, 84, 10, 15630, 94, 5764808, 10, 84, 15640, 3138428376732, 94, 3937376385699302, 5764818, 15714, 10, 14063084452067724991026, 94, 37589973457545958193355620, 15640, 5764892, 3138428376742, 480250763996501976790165756943064, 94, 15630, 3937376385699312

Offset

1,2

Links

Table of n, a(n) for n=1..26.

Formula

a(6) = 94; a(6) = Sum_{p|6, p prime} p * sigma_p(p) = 2 * sigma_2(2) + 3 * sigma_3(3) = 2 * (1^2 + 2^2) + 3 * (1^3 + 3^3) = 94.

Crossrefs

Cf. A023887 (sigma_n(n)), A351749.

Sequence in context: A048440 A226202 A271557 * A267031 A289163 A092718

Adjacent sequences: A351747 A351748 A351749 * A351751 A351752 A351753

Keyword

nonn

Author

Wesley Ivan Hurt, Feb 17 2022

Status

approved