20157454

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{4987}}^1$

素因数の和:5079

約数の個数: 16

約数和(自身を含む): 31603968

約数和(自身を除く): 11446514

約数列:

[1, 2, 43, 47, 86, 94, 2021, 4042, 4987, 9974, 214441, 234389, 428882, 468778, 10078727, 20157454]

約数ペア:

[(1, 20157454), (2, 10078727), (43, 468778), (47, 428882), (86, 234389), (94, 214441), (2021, 9974), (4042, 4987)]