20819727

素因数分解:

$3^3\times {\mathrm{61}}^1\times {\mathrm{12641}}^1$

素因数の和:12711

約数の個数: 16

約数和(自身を含む): 31352160

約数和(自身を除く): 10532433

約数列:

[1, 3, 9, 27, 61, 183, 549, 1647, 12641, 37923, 113769, 341307, 771101, 2313303, 6939909, 20819727]

約数ペア:

[(1, 20819727), (3, 6939909), (9, 2313303), (27, 771101), (61, 341307), (183, 113769), (549, 37923), (1647, 12641)]