20638244

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42641}}^1$

素因数の和:42667

約数の個数: 18

約数和(自身を含む): 39699702

約数和(自身を除く): 19061458

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42641, 85282, 170564, 469051, 938102, 1876204, 5159561, 10319122, 20638244]

約数ペア:

[(1, 20638244), (2, 10319122), (4, 5159561), (11, 1876204), (22, 938102), (44, 469051), (121, 170564), (242, 85282), (484, 42641)]