20912828

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{1297}}^1$

素因数の和:1469

約数の個数: 24

約数和(自身を含む): 38161200

約数和(自身を除く): 17248372

約数列:

[1, 2, 4, 29, 58, 116, 139, 278, 556, 1297, 2594, 4031, 5188, 8062, 16124, 37613, 75226, 150452, 180283, 360566, 721132, 5228207, 10456414, 20912828]

約数ペア:

[(1, 20912828), (2, 10456414), (4, 5228207), (29, 721132), (58, 360566), (116, 180283), (139, 150452), (278, 75226), (556, 37613), (1297, 16124), (2594, 8062), (4031, 5188)]