20864644

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{18049}}^1$

素因数の和:18087

約数の個数: 18

約数和(自身を含む): 38789450

約数和(自身を除く): 17924806

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 18049, 36098, 72196, 306833, 613666, 1227332, 5216161, 10432322, 20864644]

約数ペア:

[(1, 20864644), (2, 10432322), (4, 5216161), (17, 1227332), (34, 613666), (68, 306833), (289, 72196), (578, 36098), (1156, 18049)]