20521228

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{56377}}^1$

素因数の和:56401

約数の個数: 24

約数和(自身を含む): 44200352

約数和(自身を除く): 23679124

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 364, 56377, 112754, 225508, 394639, 732901, 789278, 1465802, 1578556, 2931604, 5130307, 10260614, 20521228]

約数ペア:

[(1, 20521228), (2, 10260614), (4, 5130307), (7, 2931604), (13, 1578556), (14, 1465802), (26, 789278), (28, 732901), (52, 394639), (91, 225508), (182, 112754), (364, 56377)]