208761705

素因数分解:

$3^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4729}}^1$

素因数の和:4855

約数の個数: 40

約数和(自身を含む): 377737800

約数和(自身を除く): 168976095

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 109, 135, 327, 405, 545, 981, 1635, 2943, 4729, 4905, 8829, 14187, 14715, 23645, 42561, 44145, 70935, 127683, 212805, 383049, 515461, 638415, 1546383, 1915245, 2577305, 4639149, 7731915, 13917447, 23195745, 41752341, 69587235, 208761705]

約数ペア:

[(1, 208761705), (3, 69587235), (5, 41752341), (9, 23195745), (15, 13917447), (27, 7731915), (45, 4639149), (81, 2577305), (109, 1915245), (135, 1546383), (327, 638415), (405, 515461), (545, 383049), (981, 212805), (1635, 127683), (2943, 70935), (4729, 44145), (4905, 42561), (8829, 23645), (14187, 14715)]