20282808

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{251}}^1$

素因数の和:317

約数の個数: 128

約数和(自身を含む): 64350720

約数和(自身を除く): 44067912

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 37, 39, 42, 52, 56, 74, 78, 84, 91, 104, 111, 148, 156, 168, 182, 222, 251, 259, 273, 296, 312, 364, 444, 481, 502, 518, 546, 728, 753, 777, 888, 962, 1004, 1036, 1092, 1443, 1506, 1554, 1757, 1924, 2008, 2072, 2184, 2886, 3012, 3108, 3263, 3367, 3514, 3848, 5271, 5772, 6024, 6216, 6526, 6734, 7028, 9287, 9789, 10101, 10542, 11544, 13052, 13468, 14056, 18574, 19578, 20202, 21084, 22841, 26104, 26936, 27861, 37148, 39156, 40404, 42168, 45682, 55722, 65009, 68523, 74296, 78312, 80808, 91364, 111444, 120731, 130018, 137046, 182728, 195027, 222888, 241462, 260036, 274092, 362193, 390054, 482924, 520072, 548184, 724386, 780108, 845117, 965848, 1448772, 1560216, 1690234, 2535351, 2897544, 3380468, 5070702, 6760936, 10141404, 20282808]

約数ペア:

[(1, 20282808), (2, 10141404), (3, 6760936), (4, 5070702), (6, 3380468), (7, 2897544), (8, 2535351), (12, 1690234), (13, 1560216), (14, 1448772), (21, 965848), (24, 845117), (26, 780108), (28, 724386), (37, 548184), (39, 520072), (42, 482924), (52, 390054), (56, 362193), (74, 274092), (78, 260036), (84, 241462), (91, 222888), (104, 195027), (111, 182728), (148, 137046), (156, 130018), (168, 120731), (182, 111444), (222, 91364), (251, 80808), (259, 78312), (273, 74296), (296, 68523), (312, 65009), (364, 55722), (444, 45682), (481, 42168), (502, 40404), (518, 39156), (546, 37148), (728, 27861), (753, 26936), (777, 26104), (888, 22841), (962, 21084), (1004, 20202), (1036, 19578), (1092, 18574), (1443, 14056), (1506, 13468), (1554, 13052), (1757, 11544), (1924, 10542), (2008, 10101), (2072, 9789), (2184, 9287), (2886, 7028), (3012, 6734), (3108, 6526), (3263, 6216), (3367, 6024), (3514, 5772), (3848, 5271)]