21499368

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:159

約数の個数: 128

約数和(自身を含む): 63037440

約数和(自身を除く): 41538072

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 31, 33, 37, 44, 62, 66, 71, 74, 88, 93, 111, 124, 132, 142, 148, 186, 213, 222, 248, 264, 284, 296, 341, 372, 407, 426, 444, 568, 682, 744, 781, 814, 852, 888, 1023, 1147, 1221, 1364, 1562, 1628, 1704, 2046, 2201, 2294, 2343, 2442, 2627, 2728, 3124, 3256, 3441, 4092, 4402, 4588, 4686, 4884, 5254, 6248, 6603, 6882, 7881, 8184, 8804, 9176, 9372, 9768, 10508, 12617, 13206, 13764, 15762, 17608, 18744, 21016, 24211, 25234, 26412, 27528, 28897, 31524, 37851, 48422, 50468, 52824, 57794, 63048, 72633, 75702, 81437, 86691, 96844, 100936, 115588, 145266, 151404, 162874, 173382, 193688, 231176, 244311, 290532, 302808, 325748, 346764, 488622, 581064, 651496, 693528, 895807, 977244, 1791614, 1954488, 2687421, 3583228, 5374842, 7166456, 10749684, 21499368]

約数ペア:

[(1, 21499368), (2, 10749684), (3, 7166456), (4, 5374842), (6, 3583228), (8, 2687421), (11, 1954488), (12, 1791614), (22, 977244), (24, 895807), (31, 693528), (33, 651496), (37, 581064), (44, 488622), (62, 346764), (66, 325748), (71, 302808), (74, 290532), (88, 244311), (93, 231176), (111, 193688), (124, 173382), (132, 162874), (142, 151404), (148, 145266), (186, 115588), (213, 100936), (222, 96844), (248, 86691), (264, 81437), (284, 75702), (296, 72633), (341, 63048), (372, 57794), (407, 52824), (426, 50468), (444, 48422), (568, 37851), (682, 31524), (744, 28897), (781, 27528), (814, 26412), (852, 25234), (888, 24211), (1023, 21016), (1147, 18744), (1221, 17608), (1364, 15762), (1562, 13764), (1628, 13206), (1704, 12617), (2046, 10508), (2201, 9768), (2294, 9372), (2343, 9176), (2442, 8804), (2627, 8184), (2728, 7881), (3124, 6882), (3256, 6603), (3441, 6248), (4092, 5254), (4402, 4884), (4588, 4686)]