21145916

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{4253}}^1$

素因数の和:4381

約数の個数: 24

約数和(自身を含む): 40736304

約数和(自身を除く): 19590388

約数列:

[1, 2, 4, 11, 22, 44, 113, 226, 452, 1243, 2486, 4253, 4972, 8506, 17012, 46783, 93566, 187132, 480589, 961178, 1922356, 5286479, 10572958, 21145916]

約数ペア:

[(1, 21145916), (2, 10572958), (4, 5286479), (11, 1922356), (22, 961178), (44, 480589), (113, 187132), (226, 93566), (452, 46783), (1243, 17012), (2486, 8506), (4253, 4972)]