8256440

素因数分解:

$2^3\times 5^1\times {\mathrm{206411}}^1$

素因数の和:206422

約数の個数: 16

約数和(自身を含む): 18577080

約数和(自身を除く): 10320640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 206411, 412822, 825644, 1032055, 1651288, 2064110, 4128220, 8256440]

約数ペア:

[(1, 8256440), (2, 4128220), (4, 2064110), (5, 1651288), (8, 1032055), (10, 825644), (20, 412822), (40, 206411)]