21877340

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{20639}}^1$

素因数の和:20701

約数の個数: 24

約数和(自身を含む): 46811520

約数和(自身を除く): 24934180

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 20639, 41278, 82556, 103195, 206390, 412780, 1093867, 2187734, 4375468, 5469335, 10938670, 21877340]

約数ペア:

[(1, 21877340), (2, 10938670), (4, 5469335), (5, 4375468), (10, 2187734), (20, 1093867), (53, 412780), (106, 206390), (212, 103195), (265, 82556), (530, 41278), (1060, 20639)]