21392156

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{277}}^1\times {\mathrm{449}}^1$

素因数の和:773

約数の個数: 24

約数和(自身を含む): 38530800

約数和(自身を除く): 17138644

約数列:

[1, 2, 4, 43, 86, 172, 277, 449, 554, 898, 1108, 1796, 11911, 19307, 23822, 38614, 47644, 77228, 124373, 248746, 497492, 5348039, 10696078, 21392156]

約数ペア:

[(1, 21392156), (2, 10696078), (4, 5348039), (43, 497492), (86, 248746), (172, 124373), (277, 77228), (449, 47644), (554, 38614), (898, 23822), (1108, 19307), (1796, 11911)]