208580905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{283}}^1$

素因数の和:370

約数の個数: 64

約数和(自身を含む): 309173760

約数和(自身を除く): 100592855

約数列:

[1, 5, 13, 17, 23, 29, 65, 85, 115, 145, 221, 283, 299, 377, 391, 493, 667, 1105, 1415, 1495, 1885, 1955, 2465, 3335, 3679, 4811, 5083, 6409, 6509, 8207, 8671, 11339, 18395, 24055, 25415, 32045, 32545, 41035, 43355, 56695, 62543, 84617, 106691, 110653, 139519, 147407, 188761, 312715, 423085, 533455, 553265, 697595, 737035, 943805, 1438489, 1813747, 2453893, 3208937, 7192445, 9068735, 12269465, 16044685, 41716181, 208580905]

約数ペア:

[(1, 208580905), (5, 41716181), (13, 16044685), (17, 12269465), (23, 9068735), (29, 7192445), (65, 3208937), (85, 2453893), (115, 1813747), (145, 1438489), (221, 943805), (283, 737035), (299, 697595), (377, 553265), (391, 533455), (493, 423085), (667, 312715), (1105, 188761), (1415, 147407), (1495, 139519), (1885, 110653), (1955, 106691), (2465, 84617), (3335, 62543), (3679, 56695), (4811, 43355), (5083, 41035), (6409, 32545), (6509, 32045), (8207, 25415), (8671, 24055), (11339, 18395)]