81020200

素因数分解:

$2^3\times 5^2\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{229}}^1$

素因数の和:335

約数の個数: 96

約数和(自身を含む): 198927000

約数和(自身を除く): 117906800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 29, 40, 50, 58, 61, 100, 116, 122, 145, 200, 229, 232, 244, 290, 305, 458, 488, 580, 610, 725, 916, 1145, 1160, 1220, 1450, 1525, 1769, 1832, 2290, 2440, 2900, 3050, 3538, 4580, 5725, 5800, 6100, 6641, 7076, 8845, 9160, 11450, 12200, 13282, 13969, 14152, 17690, 22900, 26564, 27938, 33205, 35380, 44225, 45800, 53128, 55876, 66410, 69845, 70760, 88450, 111752, 132820, 139690, 166025, 176900, 265640, 279380, 332050, 349225, 353800, 405101, 558760, 664100, 698450, 810202, 1328200, 1396900, 1620404, 2025505, 2793800, 3240808, 4051010, 8102020, 10127525, 16204040, 20255050, 40510100, 81020200]

約数ペア:

[(1, 81020200), (2, 40510100), (4, 20255050), (5, 16204040), (8, 10127525), (10, 8102020), (20, 4051010), (25, 3240808), (29, 2793800), (40, 2025505), (50, 1620404), (58, 1396900), (61, 1328200), (100, 810202), (116, 698450), (122, 664100), (145, 558760), (200, 405101), (229, 353800), (232, 349225), (244, 332050), (290, 279380), (305, 265640), (458, 176900), (488, 166025), (580, 139690), (610, 132820), (725, 111752), (916, 88450), (1145, 70760), (1160, 69845), (1220, 66410), (1450, 55876), (1525, 53128), (1769, 45800), (1832, 44225), (2290, 35380), (2440, 33205), (2900, 27938), (3050, 26564), (3538, 22900), (4580, 17690), (5725, 14152), (5800, 13969), (6100, 13282), (6641, 12200), (7076, 11450), (8845, 9160)]