81243960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{337}}^1$

素因数の和:406

約数の個数: 192

約数和(自身を含む): 291301920

約数和(自身を除く): 210057960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 41, 42, 49, 56, 60, 70, 82, 84, 98, 105, 120, 123, 140, 147, 164, 168, 196, 205, 210, 245, 246, 280, 287, 294, 328, 337, 392, 410, 420, 490, 492, 574, 588, 615, 674, 735, 820, 840, 861, 980, 984, 1011, 1148, 1176, 1230, 1348, 1435, 1470, 1640, 1685, 1722, 1960, 2009, 2022, 2296, 2359, 2460, 2696, 2870, 2940, 3370, 3444, 4018, 4044, 4305, 4718, 4920, 5055, 5740, 5880, 6027, 6740, 6888, 7077, 8036, 8088, 8610, 9436, 10045, 10110, 11480, 11795, 12054, 13480, 13817, 14154, 16072, 16513, 17220, 18872, 20090, 20220, 23590, 24108, 27634, 28308, 30135, 33026, 34440, 35385, 40180, 40440, 41451, 47180, 48216, 49539, 55268, 56616, 60270, 66052, 69085, 70770, 80360, 82565, 82902, 94360, 96719, 99078, 110536, 120540, 132104, 138170, 141540, 165130, 165804, 193438, 198156, 207255, 241080, 247695, 276340, 283080, 290157, 330260, 331608, 386876, 396312, 414510, 483595, 495390, 552680, 580314, 660520, 677033, 773752, 829020, 967190, 990780, 1160628, 1354066, 1450785, 1658040, 1934380, 1981560, 2031099, 2321256, 2708132, 2901570, 3385165, 3868760, 4062198, 5416264, 5803140, 6770330, 8124396, 10155495, 11606280, 13540660, 16248792, 20310990, 27081320, 40621980, 81243960]

約数ペア:

[(1, 81243960), (2, 40621980), (3, 27081320), (4, 20310990), (5, 16248792), (6, 13540660), (7, 11606280), (8, 10155495), (10, 8124396), (12, 6770330), (14, 5803140), (15, 5416264), (20, 4062198), (21, 3868760), (24, 3385165), (28, 2901570), (30, 2708132), (35, 2321256), (40, 2031099), (41, 1981560), (42, 1934380), (49, 1658040), (56, 1450785), (60, 1354066), (70, 1160628), (82, 990780), (84, 967190), (98, 829020), (105, 773752), (120, 677033), (123, 660520), (140, 580314), (147, 552680), (164, 495390), (168, 483595), (196, 414510), (205, 396312), (210, 386876), (245, 331608), (246, 330260), (280, 290157), (287, 283080), (294, 276340), (328, 247695), (337, 241080), (392, 207255), (410, 198156), (420, 193438), (490, 165804), (492, 165130), (574, 141540), (588, 138170), (615, 132104), (674, 120540), (735, 110536), (820, 99078), (840, 96719), (861, 94360), (980, 82902), (984, 82565), (1011, 80360), (1148, 70770), (1176, 69085), (1230, 66052), (1348, 60270), (1435, 56616), (1470, 55268), (1640, 49539), (1685, 48216), (1722, 47180), (1960, 41451), (2009, 40440), (2022, 40180), (2296, 35385), (2359, 34440), (2460, 33026), (2696, 30135), (2870, 28308), (2940, 27634), (3370, 24108), (3444, 23590), (4018, 20220), (4044, 20090), (4305, 18872), (4718, 17220), (4920, 16513), (5055, 16072), (5740, 14154), (5880, 13817), (6027, 13480), (6740, 12054), (6888, 11795), (7077, 11480), (8036, 10110), (8088, 10045), (8610, 9436)]