20941473

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{3313}}^1$

素因数の和:3373

約数の個数: 24

約数和(自身を含む): 33246048

約数和(自身を除く): 12304575

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 3313, 6321, 9939, 23191, 69573, 142459, 162337, 427377, 487011, 997213, 2991639, 6980491, 20941473]

約数ペア:

[(1, 20941473), (3, 6980491), (7, 2991639), (21, 997213), (43, 487011), (49, 427377), (129, 162337), (147, 142459), (301, 69573), (903, 23191), (2107, 9939), (3313, 6321)]