81370520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{911}}^1$

素因数の和:969

約数の個数: 128

約数和(自身を含む): 236390400

約数和(自身を除く): 155019880

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 29, 35, 40, 44, 55, 56, 58, 70, 77, 88, 110, 116, 140, 145, 154, 203, 220, 232, 280, 290, 308, 319, 385, 406, 440, 580, 616, 638, 770, 812, 911, 1015, 1160, 1276, 1540, 1595, 1624, 1822, 2030, 2233, 2552, 3080, 3190, 3644, 4060, 4466, 4555, 6377, 6380, 7288, 8120, 8932, 9110, 10021, 11165, 12754, 12760, 17864, 18220, 20042, 22330, 25508, 26419, 31885, 36440, 40084, 44660, 50105, 51016, 52838, 63770, 70147, 80168, 89320, 100210, 105676, 127540, 132095, 140294, 184933, 200420, 211352, 255080, 264190, 280588, 290609, 350735, 369866, 400840, 528380, 561176, 581218, 701470, 739732, 924665, 1056760, 1162436, 1402940, 1453045, 1479464, 1849330, 2034263, 2324872, 2805880, 2906090, 3698660, 4068526, 5812180, 7397320, 8137052, 10171315, 11624360, 16274104, 20342630, 40685260, 81370520]

約数ペア:

[(1, 81370520), (2, 40685260), (4, 20342630), (5, 16274104), (7, 11624360), (8, 10171315), (10, 8137052), (11, 7397320), (14, 5812180), (20, 4068526), (22, 3698660), (28, 2906090), (29, 2805880), (35, 2324872), (40, 2034263), (44, 1849330), (55, 1479464), (56, 1453045), (58, 1402940), (70, 1162436), (77, 1056760), (88, 924665), (110, 739732), (116, 701470), (140, 581218), (145, 561176), (154, 528380), (203, 400840), (220, 369866), (232, 350735), (280, 290609), (290, 280588), (308, 264190), (319, 255080), (385, 211352), (406, 200420), (440, 184933), (580, 140294), (616, 132095), (638, 127540), (770, 105676), (812, 100210), (911, 89320), (1015, 80168), (1160, 70147), (1276, 63770), (1540, 52838), (1595, 51016), (1624, 50105), (1822, 44660), (2030, 40084), (2233, 36440), (2552, 31885), (3080, 26419), (3190, 25508), (3644, 22330), (4060, 20042), (4466, 18220), (4555, 17864), (6377, 12760), (6380, 12754), (7288, 11165), (8120, 10021), (8932, 9110)]