20403768

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:269

約数の個数: 128

約数和(自身を含む): 64995840

約数和(自身を除く): 44592072

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 21, 22, 24, 28, 33, 42, 44, 56, 61, 66, 77, 84, 88, 122, 132, 154, 168, 181, 183, 231, 244, 264, 308, 362, 366, 427, 462, 488, 543, 616, 671, 724, 732, 854, 924, 1086, 1267, 1281, 1342, 1448, 1464, 1708, 1848, 1991, 2013, 2172, 2534, 2562, 2684, 3416, 3801, 3982, 4026, 4344, 4697, 5068, 5124, 5368, 5973, 7602, 7964, 8052, 9394, 10136, 10248, 11041, 11946, 13937, 14091, 15204, 15928, 16104, 18788, 22082, 23892, 27874, 28182, 30408, 33123, 37576, 41811, 44164, 47784, 55748, 56364, 66246, 77287, 83622, 88328, 111496, 112728, 121451, 132492, 154574, 167244, 231861, 242902, 264984, 309148, 334488, 364353, 463722, 485804, 618296, 728706, 850157, 927444, 971608, 1457412, 1700314, 1854888, 2550471, 2914824, 3400628, 5100942, 6801256, 10201884, 20403768]

約数ペア:

[(1, 20403768), (2, 10201884), (3, 6801256), (4, 5100942), (6, 3400628), (7, 2914824), (8, 2550471), (11, 1854888), (12, 1700314), (14, 1457412), (21, 971608), (22, 927444), (24, 850157), (28, 728706), (33, 618296), (42, 485804), (44, 463722), (56, 364353), (61, 334488), (66, 309148), (77, 264984), (84, 242902), (88, 231861), (122, 167244), (132, 154574), (154, 132492), (168, 121451), (181, 112728), (183, 111496), (231, 88328), (244, 83622), (264, 77287), (308, 66246), (362, 56364), (366, 55748), (427, 47784), (462, 44164), (488, 41811), (543, 37576), (616, 33123), (671, 30408), (724, 28182), (732, 27874), (854, 23892), (924, 22082), (1086, 18788), (1267, 16104), (1281, 15928), (1342, 15204), (1448, 14091), (1464, 13937), (1708, 11946), (1848, 11041), (1991, 10248), (2013, 10136), (2172, 9394), (2534, 8052), (2562, 7964), (2684, 7602), (3416, 5973), (3801, 5368), (3982, 5124), (4026, 5068), (4344, 4697)]