255020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{311}}^1$

素因数の和:361

約数の個数: 24

約数和(自身を含む): 550368

約数和(自身を除く): 295348

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 311, 410, 622, 820, 1244, 1555, 3110, 6220, 12751, 25502, 51004, 63755, 127510, 255020]

約数ペア:

[(1, 255020), (2, 127510), (4, 63755), (5, 51004), (10, 25502), (20, 12751), (41, 6220), (82, 3110), (164, 1555), (205, 1244), (311, 820), (410, 622)]