28267778

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:120

約数の個数: 64

約数和(自身を含む): 56077056

約数和(自身を除く): 27809278

約数列:

[1, 2, 7, 11, 14, 22, 37, 41, 74, 77, 82, 121, 154, 242, 259, 287, 407, 451, 518, 574, 814, 847, 902, 1331, 1517, 1694, 2662, 2849, 3034, 3157, 4477, 4961, 5698, 6314, 8954, 9317, 9922, 10619, 16687, 18634, 21238, 31339, 33374, 34727, 49247, 54571, 62678, 69454, 98494, 109142, 116809, 183557, 233618, 344729, 367114, 381997, 689458, 763994, 1284899, 2019127, 2569798, 4038254, 14133889, 28267778]

約数ペア:

[(1, 28267778), (2, 14133889), (7, 4038254), (11, 2569798), (14, 2019127), (22, 1284899), (37, 763994), (41, 689458), (74, 381997), (77, 367114), (82, 344729), (121, 233618), (154, 183557), (242, 116809), (259, 109142), (287, 98494), (407, 69454), (451, 62678), (518, 54571), (574, 49247), (814, 34727), (847, 33374), (902, 31339), (1331, 21238), (1517, 18634), (1694, 16687), (2662, 10619), (2849, 9922), (3034, 9317), (3157, 8954), (4477, 6314), (4961, 5698)]