81587880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1873}}^1$

素因数の和:1912

約数の個数: 144

約数和(自身を含む): 291613140

約数和(自身を除く): 210025260

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 110, 120, 121, 132, 165, 180, 198, 220, 242, 264, 330, 360, 363, 396, 440, 484, 495, 605, 660, 726, 792, 968, 990, 1089, 1210, 1320, 1452, 1815, 1873, 1980, 2178, 2420, 2904, 3630, 3746, 3960, 4356, 4840, 5445, 5619, 7260, 7492, 8712, 9365, 10890, 11238, 14520, 14984, 16857, 18730, 20603, 21780, 22476, 28095, 33714, 37460, 41206, 43560, 44952, 56190, 61809, 67428, 74920, 82412, 84285, 103015, 112380, 123618, 134856, 164824, 168570, 185427, 206030, 224760, 226633, 247236, 309045, 337140, 370854, 412060, 453266, 494472, 618090, 674280, 679899, 741708, 824120, 906532, 927135, 1133165, 1236180, 1359798, 1483416, 1813064, 1854270, 2039697, 2266330, 2472360, 2719596, 3399495, 3708540, 4079394, 4532660, 5439192, 6798990, 7417080, 8158788, 9065320, 10198485, 13597980, 16317576, 20396970, 27195960, 40793940, 81587880]

約数ペア:

[(1, 81587880), (2, 40793940), (3, 27195960), (4, 20396970), (5, 16317576), (6, 13597980), (8, 10198485), (9, 9065320), (10, 8158788), (11, 7417080), (12, 6798990), (15, 5439192), (18, 4532660), (20, 4079394), (22, 3708540), (24, 3399495), (30, 2719596), (33, 2472360), (36, 2266330), (40, 2039697), (44, 1854270), (45, 1813064), (55, 1483416), (60, 1359798), (66, 1236180), (72, 1133165), (88, 927135), (90, 906532), (99, 824120), (110, 741708), (120, 679899), (121, 674280), (132, 618090), (165, 494472), (180, 453266), (198, 412060), (220, 370854), (242, 337140), (264, 309045), (330, 247236), (360, 226633), (363, 224760), (396, 206030), (440, 185427), (484, 168570), (495, 164824), (605, 134856), (660, 123618), (726, 112380), (792, 103015), (968, 84285), (990, 82412), (1089, 74920), (1210, 67428), (1320, 61809), (1452, 56190), (1815, 44952), (1873, 43560), (1980, 41206), (2178, 37460), (2420, 33714), (2904, 28095), (3630, 22476), (3746, 21780), (3960, 20603), (4356, 18730), (4840, 16857), (5445, 14984), (5619, 14520), (7260, 11238), (7492, 10890), (8712, 9365)]