28786120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{65423}}^1$

素因数の和:65445

約数の個数: 32

約数和(自身を含む): 70657920

約数和(自身を除く): 41871800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 65423, 130846, 261692, 327115, 523384, 654230, 719653, 1308460, 1439306, 2616920, 2878612, 3598265, 5757224, 7196530, 14393060, 28786120]

約数ペア:

[(1, 28786120), (2, 14393060), (4, 7196530), (5, 5757224), (8, 3598265), (10, 2878612), (11, 2616920), (20, 1439306), (22, 1308460), (40, 719653), (44, 654230), (55, 523384), (88, 327115), (110, 261692), (220, 130846), (440, 65423)]