21753268

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{319901}}^1$

素因数の和:319922

約数の個数: 12

約数和(自身を含む): 40307652

約数和(自身を除く): 18554384

約数列:

[1, 2, 4, 17, 34, 68, 319901, 639802, 1279604, 5438317, 10876634, 21753268]

約数ペア:

[(1, 21753268), (2, 10876634), (4, 5438317), (17, 1279604), (34, 639802), (68, 319901)]