21010746

素因数分解:

$2^1\times 3^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:187

約数の個数: 64

約数和(自身を含む): 46227456

約数和(自身を除く): 25216710

約数列:

[1, 2, 3, 6, 31, 37, 43, 62, 71, 74, 86, 93, 111, 129, 142, 186, 213, 222, 258, 426, 1147, 1333, 1591, 2201, 2294, 2627, 2666, 3053, 3182, 3441, 3999, 4402, 4773, 5254, 6106, 6603, 6882, 7881, 7998, 9159, 9546, 13206, 15762, 18318, 49321, 81437, 94643, 98642, 112961, 147963, 162874, 189286, 225922, 244311, 283929, 295926, 338883, 488622, 567858, 677766, 3501791, 7003582, 10505373, 21010746]

約数ペア:

[(1, 21010746), (2, 10505373), (3, 7003582), (6, 3501791), (31, 677766), (37, 567858), (43, 488622), (62, 338883), (71, 295926), (74, 283929), (86, 244311), (93, 225922), (111, 189286), (129, 162874), (142, 147963), (186, 112961), (213, 98642), (222, 94643), (258, 81437), (426, 49321), (1147, 18318), (1333, 15762), (1591, 13206), (2201, 9546), (2294, 9159), (2627, 7998), (2666, 7881), (3053, 6882), (3182, 6603), (3441, 6106), (3999, 5254), (4402, 4773)]