18981486

素因数分解:

$2^1\times 3^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:111

約数の個数: 128

約数和(自身を含む): 49766400

約数和(自身を除く): 30784914

約数列:

[1, 2, 3, 6, 9, 17, 18, 23, 27, 29, 31, 34, 46, 51, 54, 58, 62, 69, 87, 93, 102, 138, 153, 174, 186, 207, 261, 279, 306, 391, 414, 459, 493, 522, 527, 558, 621, 667, 713, 782, 783, 837, 899, 918, 986, 1054, 1173, 1242, 1334, 1426, 1479, 1566, 1581, 1674, 1798, 2001, 2139, 2346, 2697, 2958, 3162, 3519, 4002, 4278, 4437, 4743, 5394, 6003, 6417, 7038, 8091, 8874, 9486, 10557, 11339, 12006, 12121, 12834, 13311, 14229, 15283, 16182, 18009, 19251, 20677, 21114, 22678, 24242, 24273, 26622, 28458, 30566, 34017, 36018, 36363, 38502, 41354, 45849, 48546, 62031, 68034, 72726, 91698, 102051, 109089, 124062, 137547, 186093, 204102, 218178, 275094, 306153, 327267, 351509, 372186, 412641, 558279, 612306, 654534, 703018, 825282, 1054527, 1116558, 2109054, 3163581, 6327162, 9490743, 18981486]

約数ペア:

[(1, 18981486), (2, 9490743), (3, 6327162), (6, 3163581), (9, 2109054), (17, 1116558), (18, 1054527), (23, 825282), (27, 703018), (29, 654534), (31, 612306), (34, 558279), (46, 412641), (51, 372186), (54, 351509), (58, 327267), (62, 306153), (69, 275094), (87, 218178), (93, 204102), (102, 186093), (138, 137547), (153, 124062), (174, 109089), (186, 102051), (207, 91698), (261, 72726), (279, 68034), (306, 62031), (391, 48546), (414, 45849), (459, 41354), (493, 38502), (522, 36363), (527, 36018), (558, 34017), (621, 30566), (667, 28458), (713, 26622), (782, 24273), (783, 24242), (837, 22678), (899, 21114), (918, 20677), (986, 19251), (1054, 18009), (1173, 16182), (1242, 15283), (1334, 14229), (1426, 13311), (1479, 12834), (1566, 12121), (1581, 12006), (1674, 11339), (1798, 10557), (2001, 9486), (2139, 8874), (2346, 8091), (2697, 7038), (2958, 6417), (3162, 6003), (3519, 5394), (4002, 4743), (4278, 4437)]