28090040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{63841}}^1$

素因数の和:63863

約数の個数: 32

約数和(自身を含む): 68949360

約数和(自身を除く): 40859320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 63841, 127682, 255364, 319205, 510728, 638410, 702251, 1276820, 1404502, 2553640, 2809004, 3511255, 5618008, 7022510, 14045020, 28090040]

約数ペア:

[(1, 28090040), (2, 14045020), (4, 7022510), (5, 5618008), (8, 3511255), (10, 2809004), (11, 2553640), (20, 1404502), (22, 1276820), (40, 702251), (44, 638410), (55, 510728), (88, 319205), (110, 255364), (220, 127682), (440, 63841)]