20180851216

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{709}}^1\times {\mathrm{859}}^1$

素因数の和:1704

約数の個数: 80

約数和(自身を含む): 41642920000

約数和(自身を除く): 21462068784

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 109, 152, 218, 304, 436, 709, 859, 872, 1418, 1718, 1744, 2071, 2836, 3436, 4142, 5672, 6872, 8284, 11344, 13471, 13744, 16321, 16568, 26942, 32642, 33136, 53884, 65284, 77281, 93631, 107768, 130568, 154562, 187262, 215536, 261136, 309124, 374524, 609031, 618248, 749048, 1218062, 1236496, 1468339, 1498096, 1778989, 2436124, 2936678, 3557978, 4872248, 5873356, 7115956, 9744496, 11571589, 11746712, 14231912, 23143178, 23493424, 28463824, 46286356, 66384379, 92572712, 132768758, 185145424, 265537516, 531075032, 1062150064, 1261303201, 2522606402, 5045212804, 10090425608, 20180851216]

約数ペア:

[(1, 20180851216), (2, 10090425608), (4, 5045212804), (8, 2522606402), (16, 1261303201), (19, 1062150064), (38, 531075032), (76, 265537516), (109, 185145424), (152, 132768758), (218, 92572712), (304, 66384379), (436, 46286356), (709, 28463824), (859, 23493424), (872, 23143178), (1418, 14231912), (1718, 11746712), (1744, 11571589), (2071, 9744496), (2836, 7115956), (3436, 5873356), (4142, 4872248), (5672, 3557978), (6872, 2936678), (8284, 2436124), (11344, 1778989), (13471, 1498096), (13744, 1468339), (16321, 1236496), (16568, 1218062), (26942, 749048), (32642, 618248), (33136, 609031), (53884, 374524), (65284, 309124), (77281, 261136), (93631, 215536), (107768, 187262), (130568, 154562)]