28226920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16411}}^1$

素因数の和:16465

約数の個数: 32

約数和(自身を含む): 64991520

約数和(自身を除く): 36764600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 16411, 32822, 65644, 82055, 131288, 164110, 328220, 656440, 705673, 1411346, 2822692, 3528365, 5645384, 7056730, 14113460, 28226920]

約数ペア:

[(1, 28226920), (2, 14113460), (4, 7056730), (5, 5645384), (8, 3528365), (10, 2822692), (20, 1411346), (40, 705673), (43, 656440), (86, 328220), (172, 164110), (215, 131288), (344, 82055), (430, 65644), (860, 32822), (1720, 16411)]