408875020

素因数分解:

$2^2\times 5^1\times {\mathrm{911}}^1\times {\mathrm{22441}}^1$

素因数の和:23361

約数の個数: 24

約数和(自身を含む): 859618368

約数和(自身を除く): 450743348

約数列:

[1, 2, 4, 5, 10, 20, 911, 1822, 3644, 4555, 9110, 18220, 22441, 44882, 89764, 112205, 224410, 448820, 20443751, 40887502, 81775004, 102218755, 204437510, 408875020]

約数ペア:

[(1, 408875020), (2, 204437510), (4, 102218755), (5, 81775004), (10, 40887502), (20, 20443751), (911, 448820), (1822, 224410), (3644, 112205), (4555, 89764), (9110, 44882), (18220, 22441)]