8457640

素因数分解:

$2^3\times 5^1\times {\mathrm{211441}}^1$

素因数の和:211452

約数の個数: 16

約数和(自身を含む): 19029780

約数和(自身を除く): 10572140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211441, 422882, 845764, 1057205, 1691528, 2114410, 4228820, 8457640]

約数ペア:

[(1, 8457640), (2, 4228820), (4, 2114410), (5, 1691528), (8, 1057205), (10, 845764), (20, 422882), (40, 211441)]