21089816

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{21787}}^1$

素因数の和:21815

約数の個数: 24

約数和(自身を含む): 43467060

約数和(自身を除く): 22377244

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 121, 242, 484, 968, 21787, 43574, 87148, 174296, 239657, 479314, 958628, 1917256, 2636227, 5272454, 10544908, 21089816]

約数ペア:

[(1, 21089816), (2, 10544908), (4, 5272454), (8, 2636227), (11, 1917256), (22, 958628), (44, 479314), (88, 239657), (121, 174296), (242, 87148), (484, 43574), (968, 21787)]