19205780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{87299}}^1$

素因数の和:87319

約数の個数: 24

約数和(自身を含む): 43999200

約数和(自身を除く): 24793420

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 87299, 174598, 349196, 436495, 872990, 960289, 1745980, 1920578, 3841156, 4801445, 9602890, 19205780]

約数ペア:

[(1, 19205780), (2, 9602890), (4, 4801445), (5, 3841156), (10, 1920578), (11, 1745980), (20, 960289), (22, 872990), (44, 436495), (55, 349196), (110, 174598), (220, 87299)]