21042308

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{17477}}^1$

素因数の和:17531

約数の個数: 24

約数和(自身を含む): 43065792

約数和(自身を除く): 22023484

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 17477, 34954, 69908, 122339, 244678, 489356, 751511, 1503022, 3006044, 5260577, 10521154, 21042308]

約数ペア:

[(1, 21042308), (2, 10521154), (4, 5260577), (7, 3006044), (14, 1503022), (28, 751511), (43, 489356), (86, 244678), (172, 122339), (301, 69908), (602, 34954), (1204, 17477)]