21254506

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{4027}}^1$

素因数の和:4078

約数の個数: 32

約数和(自身を含む): 40602240

約数和(自身を除く): 19347734

約数列:

[1, 2, 7, 13, 14, 26, 29, 58, 91, 182, 203, 377, 406, 754, 2639, 4027, 5278, 8054, 28189, 52351, 56378, 104702, 116783, 233566, 366457, 732914, 817481, 1518179, 1634962, 3036358, 10627253, 21254506]

約数ペア:

[(1, 21254506), (2, 10627253), (7, 3036358), (13, 1634962), (14, 1518179), (26, 817481), (29, 732914), (58, 366457), (91, 233566), (182, 116783), (203, 104702), (377, 56378), (406, 52351), (754, 28189), (2639, 8054), (4027, 5278)]