81631440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{937}}^1$

素因数の和:978

約数の個数: 180

約数和(自身を含む): 301655172

約数和(自身を除く): 220023732

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 48, 55, 60, 66, 72, 80, 88, 90, 99, 110, 120, 121, 132, 144, 165, 176, 180, 198, 220, 240, 242, 264, 330, 360, 363, 396, 440, 484, 495, 528, 605, 660, 720, 726, 792, 880, 937, 968, 990, 1089, 1210, 1320, 1452, 1584, 1815, 1874, 1936, 1980, 2178, 2420, 2640, 2811, 2904, 3630, 3748, 3960, 4356, 4685, 4840, 5445, 5622, 5808, 7260, 7496, 7920, 8433, 8712, 9370, 9680, 10307, 10890, 11244, 14055, 14520, 14992, 16866, 17424, 18740, 20614, 21780, 22488, 28110, 29040, 30921, 33732, 37480, 41228, 42165, 43560, 44976, 51535, 56220, 61842, 67464, 74960, 82456, 84330, 87120, 92763, 103070, 112440, 113377, 123684, 134928, 154605, 164912, 168660, 185526, 206140, 224880, 226754, 247368, 309210, 337320, 340131, 371052, 412280, 453508, 463815, 494736, 566885, 618420, 674640, 680262, 742104, 824560, 907016, 927630, 1020393, 1133770, 1236840, 1360524, 1484208, 1700655, 1814032, 1855260, 2040786, 2267540, 2473680, 2721048, 3401310, 3710520, 4081572, 4535080, 5101965, 5442096, 6802620, 7421040, 8163144, 9070160, 10203930, 13605240, 16326288, 20407860, 27210480, 40815720, 81631440]

約数ペア:

[(1, 81631440), (2, 40815720), (3, 27210480), (4, 20407860), (5, 16326288), (6, 13605240), (8, 10203930), (9, 9070160), (10, 8163144), (11, 7421040), (12, 6802620), (15, 5442096), (16, 5101965), (18, 4535080), (20, 4081572), (22, 3710520), (24, 3401310), (30, 2721048), (33, 2473680), (36, 2267540), (40, 2040786), (44, 1855260), (45, 1814032), (48, 1700655), (55, 1484208), (60, 1360524), (66, 1236840), (72, 1133770), (80, 1020393), (88, 927630), (90, 907016), (99, 824560), (110, 742104), (120, 680262), (121, 674640), (132, 618420), (144, 566885), (165, 494736), (176, 463815), (180, 453508), (198, 412280), (220, 371052), (240, 340131), (242, 337320), (264, 309210), (330, 247368), (360, 226754), (363, 224880), (396, 206140), (440, 185526), (484, 168660), (495, 164912), (528, 154605), (605, 134928), (660, 123684), (720, 113377), (726, 112440), (792, 103070), (880, 92763), (937, 87120), (968, 84330), (990, 82456), (1089, 74960), (1210, 67464), (1320, 61842), (1452, 56220), (1584, 51535), (1815, 44976), (1874, 43560), (1936, 42165), (1980, 41228), (2178, 37480), (2420, 33732), (2640, 30921), (2811, 29040), (2904, 28110), (3630, 22488), (3748, 21780), (3960, 20614), (4356, 18740), (4685, 17424), (4840, 16866), (5445, 14992), (5622, 14520), (5808, 14055), (7260, 11244), (7496, 10890), (7920, 10307), (8433, 9680), (8712, 9370)]