397989826

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{288817}}^1$

素因数の和:288885

約数の個数: 16

約数和(自身を含む): 655039224

約数和(自身を除く): 257049398

約数列:

[1, 2, 13, 26, 53, 106, 689, 1378, 288817, 577634, 3754621, 7509242, 15307301, 30614602, 198994913, 397989826]

約数ペア:

[(1, 397989826), (2, 198994913), (13, 30614602), (26, 15307301), (53, 7509242), (106, 3754621), (689, 577634), (1378, 288817)]