18804260

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{2417}}^1$

素因数の和:2815

約数の個数: 24

約数和(自身を含む): 39606840

約数和(自身を除く): 20802580

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 2417, 3890, 4834, 7780, 9668, 12085, 24170, 48340, 940213, 1880426, 3760852, 4701065, 9402130, 18804260]

約数ペア:

[(1, 18804260), (2, 9402130), (4, 4701065), (5, 3760852), (10, 1880426), (20, 940213), (389, 48340), (778, 24170), (1556, 12085), (1945, 9668), (2417, 7780), (3890, 4834)]