81389727

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{2939}}^1$

素因数の和:3143

約数の個数: 24

約数和(自身を含む): 125208720

約数和(自身を除く): 43818993

約数列:

[1, 3, 9, 17, 51, 153, 181, 543, 1629, 2939, 3077, 8817, 9231, 26451, 27693, 49963, 149889, 449667, 531959, 1595877, 4787631, 9043303, 27129909, 81389727]

約数ペア:

[(1, 81389727), (3, 27129909), (9, 9043303), (17, 4787631), (51, 1595877), (153, 531959), (181, 449667), (543, 149889), (1629, 49963), (2939, 27693), (3077, 26451), (8817, 9231)]