21282664

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{204641}}^1$

素因数の和:204660

約数の個数: 16

約数和(自身を含む): 42974820

約数和(自身を除く): 21692156

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 204641, 409282, 818564, 1637128, 2660333, 5320666, 10641332, 21282664]

約数ペア:

[(1, 21282664), (2, 10641332), (4, 5320666), (8, 2660333), (13, 1637128), (26, 818564), (52, 409282), (104, 204641)]