21492604

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{17851}}^1$

素因数の和:17905

約数の個数: 24

約数和(自身を含む): 43987328

約数和(自身を除く): 22494724

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 17851, 35702, 71404, 124957, 249914, 499828, 767593, 1535186, 3070372, 5373151, 10746302, 21492604]

約数ペア:

[(1, 21492604), (2, 10746302), (4, 5373151), (7, 3070372), (14, 1535186), (28, 767593), (43, 499828), (86, 249914), (172, 124957), (301, 71404), (602, 35702), (1204, 17851)]