20845540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{24239}}^1$

素因数の和:24291

約数の個数: 24

約数和(自身を含む): 44795520

約数和(自身を除く): 23949980

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 24239, 48478, 96956, 121195, 242390, 484780, 1042277, 2084554, 4169108, 5211385, 10422770, 20845540]

約数ペア:

[(1, 20845540), (2, 10422770), (4, 5211385), (5, 4169108), (10, 2084554), (20, 1042277), (43, 484780), (86, 242390), (172, 121195), (215, 96956), (430, 48478), (860, 24239)]