12561320

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4423}}^1$

素因数の和:4505

約数の個数: 32

約数和(自身を含む): 28667520

約数和(自身を除く): 16106200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 4423, 8846, 17692, 22115, 35384, 44230, 88460, 176920, 314033, 628066, 1256132, 1570165, 2512264, 3140330, 6280660, 12561320]

約数ペア:

[(1, 12561320), (2, 6280660), (4, 3140330), (5, 2512264), (8, 1570165), (10, 1256132), (20, 628066), (40, 314033), (71, 176920), (142, 88460), (284, 44230), (355, 35384), (568, 22115), (710, 17692), (1420, 8846), (2840, 4423)]