21158576

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{8423}}^1$

素因数の和:8588

約数の個数: 20

約数和(自身を含む): 41260752

約数和(自身を除く): 20102176

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 1256, 2512, 8423, 16846, 33692, 67384, 134768, 1322411, 2644822, 5289644, 10579288, 21158576]

約数ペア:

[(1, 21158576), (2, 10579288), (4, 5289644), (8, 2644822), (16, 1322411), (157, 134768), (314, 67384), (628, 33692), (1256, 16846), (2512, 8423)]