18979598

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{20063}}^1$

素因数の和:20119

約数の個数: 16

約数和(自身を含む): 31781376

約数和(自身を除く): 12801778

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 20063, 40126, 220693, 441386, 862709, 1725418, 9489799, 18979598]

約数ペア:

[(1, 18979598), (2, 9489799), (11, 1725418), (22, 862709), (43, 441386), (86, 220693), (473, 40126), (946, 20063)]