21701588

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{18773}}^1$

素因数の和:18811

約数の個数: 18

約数和(自身を含む): 40345326

約数和(自身を除く): 18643738

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 18773, 37546, 75092, 319141, 638282, 1276564, 5425397, 10850794, 21701588]

約数ペア:

[(1, 21701588), (2, 10850794), (4, 5425397), (17, 1276564), (34, 638282), (68, 319141), (289, 75092), (578, 37546), (1156, 18773)]