258795280

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{78901}}^1$

素因数の和:78955

約数の個数: 40

約数和(自身を含む): 616382424

約数和(自身を除く): 357587144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 78901, 157802, 315604, 394505, 631208, 789010, 1262416, 1578020, 3156040, 3234941, 6312080, 6469882, 12939764, 16174705, 25879528, 32349410, 51759056, 64698820, 129397640, 258795280]

約数ペア:

[(1, 258795280), (2, 129397640), (4, 64698820), (5, 51759056), (8, 32349410), (10, 25879528), (16, 16174705), (20, 12939764), (40, 6469882), (41, 6312080), (80, 3234941), (82, 3156040), (164, 1578020), (205, 1262416), (328, 789010), (410, 631208), (656, 394505), (820, 315604), (1640, 157802), (3280, 78901)]