81718350280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1187}}^1\times {\mathrm{3463}}^1$

素因数の和:4739

約数の個数: 128

約数和(自身を含む): 213333626880

約数和(自身を除く): 131615276600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1187, 1420, 1988, 2374, 2485, 2840, 3463, 3976, 4748, 4970, 5935, 6926, 8309, 9496, 9940, 11870, 13852, 16618, 17315, 19880, 23740, 24241, 27704, 33236, 34630, 41545, 47480, 48482, 66472, 69260, 83090, 84277, 96964, 121205, 138520, 166180, 168554, 193928, 242410, 245873, 332360, 337108, 421385, 484820, 491746, 589939, 674216, 842770, 969640, 983492, 1179878, 1229365, 1685540, 1721111, 1966984, 2359756, 2458730, 2949695, 3371080, 3442222, 4110581, 4719512, 4917460, 5899390, 6884444, 8221162, 8605555, 9834920, 11798780, 13768888, 16442324, 17211110, 20552905, 23597560, 28774067, 32884648, 34422220, 41105810, 57548134, 68844440, 82211620, 115096268, 143870335, 164423240, 230192536, 287740670, 291851251, 575481340, 583702502, 1150962680, 1167405004, 1459256255, 2042958757, 2334810008, 2918512510, 4085917514, 5837025020, 8171835028, 10214793785, 11674050040, 16343670056, 20429587570, 40859175140, 81718350280]

約数ペア:

[(1, 81718350280), (2, 40859175140), (4, 20429587570), (5, 16343670056), (7, 11674050040), (8, 10214793785), (10, 8171835028), (14, 5837025020), (20, 4085917514), (28, 2918512510), (35, 2334810008), (40, 2042958757), (56, 1459256255), (70, 1167405004), (71, 1150962680), (140, 583702502), (142, 575481340), (280, 291851251), (284, 287740670), (355, 230192536), (497, 164423240), (568, 143870335), (710, 115096268), (994, 82211620), (1187, 68844440), (1420, 57548134), (1988, 41105810), (2374, 34422220), (2485, 32884648), (2840, 28774067), (3463, 23597560), (3976, 20552905), (4748, 17211110), (4970, 16442324), (5935, 13768888), (6926, 11798780), (8309, 9834920), (9496, 8605555), (9940, 8221162), (11870, 6884444), (13852, 5899390), (16618, 4917460), (17315, 4719512), (19880, 4110581), (23740, 3442222), (24241, 3371080), (27704, 2949695), (33236, 2458730), (34630, 2359756), (41545, 1966984), (47480, 1721111), (48482, 1685540), (66472, 1229365), (69260, 1179878), (83090, 983492), (84277, 969640), (96964, 842770), (121205, 674216), (138520, 589939), (166180, 491746), (168554, 484820), (193928, 421385), (242410, 337108), (245873, 332360)]