81681318

素因数分解:

$2^1\times 3^3\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:390

約数の個数: 64

約数和(自身を含む): 186863040

約数和(自身を除く): 105181722

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 61, 122, 137, 181, 183, 274, 362, 366, 411, 543, 549, 822, 1086, 1098, 1233, 1629, 1647, 2466, 3258, 3294, 3699, 4887, 7398, 8357, 9774, 11041, 16714, 22082, 24797, 25071, 33123, 49594, 50142, 66246, 74391, 75213, 99369, 148782, 150426, 198738, 223173, 225639, 298107, 446346, 451278, 596214, 669519, 1339038, 1512617, 3025234, 4537851, 9075702, 13613553, 27227106, 40840659, 81681318]

約数ペア:

[(1, 81681318), (2, 40840659), (3, 27227106), (6, 13613553), (9, 9075702), (18, 4537851), (27, 3025234), (54, 1512617), (61, 1339038), (122, 669519), (137, 596214), (181, 451278), (183, 446346), (274, 298107), (362, 225639), (366, 223173), (411, 198738), (543, 150426), (549, 148782), (822, 99369), (1086, 75213), (1098, 74391), (1233, 66246), (1629, 50142), (1647, 49594), (2466, 33123), (3258, 25071), (3294, 24797), (3699, 22082), (4887, 16714), (7398, 11041), (8357, 9774)]