19980459856

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{126433}}^1$

素因数の和:126548

約数の個数: 80

約数和(自身を含む): 47409715584

約数和(自身を除く): 27429255728

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 56, 68, 83, 112, 119, 136, 166, 238, 272, 332, 476, 581, 664, 952, 1162, 1328, 1411, 1904, 2324, 2822, 4648, 5644, 9296, 9877, 11288, 19754, 22576, 39508, 79016, 126433, 158032, 252866, 505732, 885031, 1011464, 1770062, 2022928, 2149361, 3540124, 4298722, 7080248, 8597444, 10493939, 14160496, 15045527, 17194888, 20987878, 30091054, 34389776, 41975756, 60182108, 73457573, 83951512, 120364216, 146915146, 167903024, 178396963, 240728432, 293830292, 356793926, 587660584, 713587852, 1175321168, 1248778741, 1427175704, 2497557482, 2854351408, 4995114964, 9990229928, 19980459856]

約数ペア:

[(1, 19980459856), (2, 9990229928), (4, 4995114964), (7, 2854351408), (8, 2497557482), (14, 1427175704), (16, 1248778741), (17, 1175321168), (28, 713587852), (34, 587660584), (56, 356793926), (68, 293830292), (83, 240728432), (112, 178396963), (119, 167903024), (136, 146915146), (166, 120364216), (238, 83951512), (272, 73457573), (332, 60182108), (476, 41975756), (581, 34389776), (664, 30091054), (952, 20987878), (1162, 17194888), (1328, 15045527), (1411, 14160496), (1904, 10493939), (2324, 8597444), (2822, 7080248), (4648, 4298722), (5644, 3540124), (9296, 2149361), (9877, 2022928), (11288, 1770062), (19754, 1011464), (22576, 885031), (39508, 505732), (79016, 252866), (126433, 158032)]