20915288

素因数分解:

$2^3\times {\mathrm{269}}^1\times {\mathrm{9719}}^1$

素因数の和:9994

約数の個数: 16

約数和(自身を含む): 39366000

約数和(自身を除く): 18450712

約数列:

[1, 2, 4, 8, 269, 538, 1076, 2152, 9719, 19438, 38876, 77752, 2614411, 5228822, 10457644, 20915288]

約数ペア:

[(1, 20915288), (2, 10457644), (4, 5228822), (8, 2614411), (269, 77752), (538, 38876), (1076, 19438), (2152, 9719)]