20217820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{144413}}^1$

素因数の和:144429

約数の個数: 24

約数和(自身を含む): 48523104

約数和(自身を除く): 28305284

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 144413, 288826, 577652, 722065, 1010891, 1444130, 2021782, 2888260, 4043564, 5054455, 10108910, 20217820]

約数ペア:

[(1, 20217820), (2, 10108910), (4, 5054455), (5, 4043564), (7, 2888260), (10, 2021782), (14, 1444130), (20, 1010891), (28, 722065), (35, 577652), (70, 288826), (140, 144413)]