20865218

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{4253}}^1$

素因数の和:4489

約数の個数: 16

約数和(自身を含む): 34304256

約数和(自身を除く): 13439038

約数列:

[1, 2, 11, 22, 223, 446, 2453, 4253, 4906, 8506, 46783, 93566, 948419, 1896838, 10432609, 20865218]

約数ペア:

[(1, 20865218), (2, 10432609), (11, 1896838), (22, 948419), (223, 93566), (446, 46783), (2453, 8506), (4253, 4906)]