123280208

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{405527}}^1$

素因数の和:405554

約数の個数: 20

約数和(自身を含む): 251427360

約数和(自身を除く): 128147152

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 405527, 811054, 1622108, 3244216, 6488432, 7705013, 15410026, 30820052, 61640104, 123280208]

約数ペア:

[(1, 123280208), (2, 61640104), (4, 30820052), (8, 15410026), (16, 7705013), (19, 6488432), (38, 3244216), (76, 1622108), (152, 811054), (304, 405527)]