20155261

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{2309}}^1$

素因数の和:2388

約数の個数: 16

約数和(自身を含む): 24393600

約数和(自身を除く): 4238339

約数列:

[1, 7, 29, 43, 203, 301, 1247, 2309, 8729, 16163, 66961, 99287, 468727, 695009, 2879323, 20155261]

約数ペア:

[(1, 20155261), (7, 2879323), (29, 695009), (43, 468727), (203, 99287), (301, 66961), (1247, 16163), (2309, 8729)]