21163208

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{240491}}^1$

素因数の和:240508

約数の個数: 16

約数和(自身を含む): 43288560

約数和(自身を除く): 22125352

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 240491, 480982, 961964, 1923928, 2645401, 5290802, 10581604, 21163208]

約数ペア:

[(1, 21163208), (2, 10581604), (4, 5290802), (8, 2645401), (11, 1923928), (22, 961964), (44, 480982), (88, 240491)]