81351960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{241}}^1$

素因数の和:381

約数の個数: 128

約数和(自身を含む): 256132800

約数和(自身を除く): 174780840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 40, 58, 60, 87, 97, 116, 120, 145, 174, 194, 232, 241, 290, 291, 348, 388, 435, 482, 485, 580, 582, 696, 723, 776, 870, 964, 970, 1160, 1164, 1205, 1446, 1455, 1740, 1928, 1940, 2328, 2410, 2813, 2892, 2910, 3480, 3615, 3880, 4820, 5626, 5784, 5820, 6989, 7230, 8439, 9640, 11252, 11640, 13978, 14065, 14460, 16878, 20967, 22504, 23377, 27956, 28130, 28920, 33756, 34945, 41934, 42195, 46754, 55912, 56260, 67512, 69890, 70131, 83868, 84390, 93508, 104835, 112520, 116885, 139780, 140262, 167736, 168780, 187016, 209670, 233770, 279560, 280524, 337560, 350655, 419340, 467540, 561048, 677933, 701310, 838680, 935080, 1355866, 1402620, 2033799, 2711732, 2805240, 3389665, 4067598, 5423464, 6779330, 8135196, 10168995, 13558660, 16270392, 20337990, 27117320, 40675980, 81351960]

約数ペア:

[(1, 81351960), (2, 40675980), (3, 27117320), (4, 20337990), (5, 16270392), (6, 13558660), (8, 10168995), (10, 8135196), (12, 6779330), (15, 5423464), (20, 4067598), (24, 3389665), (29, 2805240), (30, 2711732), (40, 2033799), (58, 1402620), (60, 1355866), (87, 935080), (97, 838680), (116, 701310), (120, 677933), (145, 561048), (174, 467540), (194, 419340), (232, 350655), (241, 337560), (290, 280524), (291, 279560), (348, 233770), (388, 209670), (435, 187016), (482, 168780), (485, 167736), (580, 140262), (582, 139780), (696, 116885), (723, 112520), (776, 104835), (870, 93508), (964, 84390), (970, 83868), (1160, 70131), (1164, 69890), (1205, 67512), (1446, 56260), (1455, 55912), (1740, 46754), (1928, 42195), (1940, 41934), (2328, 34945), (2410, 33756), (2813, 28920), (2892, 28130), (2910, 27956), (3480, 23377), (3615, 22504), (3880, 20967), (4820, 16878), (5626, 14460), (5784, 14065), (5820, 13978), (6989, 11640), (7230, 11252), (8439, 9640)]