8128220

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2063}}^1$

素因数の和:2269

約数の個数: 24

約数和(自身を含む): 17164224

約数和(自身を除く): 9036004

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 2063, 3940, 4126, 8252, 10315, 20630, 41260, 406411, 812822, 1625644, 2032055, 4064110, 8128220]

約数ペア:

[(1, 8128220), (2, 4064110), (4, 2032055), (5, 1625644), (10, 812822), (20, 406411), (197, 41260), (394, 20630), (788, 10315), (985, 8252), (1970, 4126), (2063, 3940)]