21447268

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{18553}}^1$

素因数の和:18591

約数の個数: 18

約数和(自身を含む): 39872546

約数和(自身を除く): 18425278

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 18553, 37106, 74212, 315401, 630802, 1261604, 5361817, 10723634, 21447268]

約数ペア:

[(1, 21447268), (2, 10723634), (4, 5361817), (17, 1261604), (34, 630802), (68, 315401), (289, 74212), (578, 37106), (1156, 18553)]