888888

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1$

素因数の和:77

約数の個数: 128

約数和(自身を含む): 3064320

約数和(自身を除く): 2175432

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 13, 14, 21, 22, 24, 26, 28, 33, 37, 39, 42, 44, 52, 56, 66, 74, 77, 78, 84, 88, 91, 104, 111, 132, 143, 148, 154, 156, 168, 182, 222, 231, 259, 264, 273, 286, 296, 308, 312, 364, 407, 429, 444, 462, 481, 518, 546, 572, 616, 728, 777, 814, 858, 888, 924, 962, 1001, 1036, 1092, 1144, 1221, 1443, 1554, 1628, 1716, 1848, 1924, 2002, 2072, 2184, 2442, 2849, 2886, 3003, 3108, 3256, 3367, 3432, 3848, 4004, 4884, 5291, 5698, 5772, 6006, 6216, 6734, 8008, 8547, 9768, 10101, 10582, 11396, 11544, 12012, 13468, 15873, 17094, 20202, 21164, 22792, 24024, 26936, 31746, 34188, 37037, 40404, 42328, 63492, 68376, 74074, 80808, 111111, 126984, 148148, 222222, 296296, 444444, 888888]

約数ペア:

[(1, 888888), (2, 444444), (3, 296296), (4, 222222), (6, 148148), (7, 126984), (8, 111111), (11, 80808), (12, 74074), (13, 68376), (14, 63492), (21, 42328), (22, 40404), (24, 37037), (26, 34188), (28, 31746), (33, 26936), (37, 24024), (39, 22792), (42, 21164), (44, 20202), (52, 17094), (56, 15873), (66, 13468), (74, 12012), (77, 11544), (78, 11396), (84, 10582), (88, 10101), (91, 9768), (104, 8547), (111, 8008), (132, 6734), (143, 6216), (148, 6006), (154, 5772), (156, 5698), (168, 5291), (182, 4884), (222, 4004), (231, 3848), (259, 3432), (264, 3367), (273, 3256), (286, 3108), (296, 3003), (308, 2886), (312, 2849), (364, 2442), (407, 2184), (429, 2072), (444, 2002), (462, 1924), (481, 1848), (518, 1716), (546, 1628), (572, 1554), (616, 1443), (728, 1221), (777, 1144), (814, 1092), (858, 1036), (888, 1001), (924, 962)]