21108033

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15329}}^1$

素因数の和:15358

約数の個数: 20

約数和(自身を含む): 33388740

約数和(自身を除く): 12280707

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15329, 45987, 137961, 260593, 413883, 781779, 1241649, 2345337, 7036011, 21108033]

約数ペア:

[(1, 21108033), (3, 7036011), (9, 2345337), (17, 1241649), (27, 781779), (51, 413883), (81, 260593), (153, 137961), (459, 45987), (1377, 15329)]