17985640

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2131}}^1$

素因数の和:2353

約数の個数: 32

約数和(自身を含む): 40678560

約数和(自身を除く): 22692920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 2131, 4220, 4262, 8440, 8524, 10655, 17048, 21310, 42620, 85240, 449641, 899282, 1798564, 2248205, 3597128, 4496410, 8992820, 17985640]

約数ペア:

[(1, 17985640), (2, 8992820), (4, 4496410), (5, 3597128), (8, 2248205), (10, 1798564), (20, 899282), (40, 449641), (211, 85240), (422, 42620), (844, 21310), (1055, 17048), (1688, 10655), (2110, 8524), (2131, 8440), (4220, 4262)]