20781123

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{2179}}^1$

素因数の和:2227

約数の個数: 24

約数和(自身を含む): 32124480

約数和(自身を除く): 11343357

約数列:

[1, 3, 11, 17, 33, 51, 187, 289, 561, 867, 2179, 3179, 6537, 9537, 23969, 37043, 71907, 111129, 407473, 629731, 1222419, 1889193, 6927041, 20781123]

約数ペア:

[(1, 20781123), (3, 6927041), (11, 1889193), (17, 1222419), (33, 629731), (51, 407473), (187, 111129), (289, 71907), (561, 37043), (867, 23969), (2179, 9537), (3179, 6537)]