16256440

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2063}}^1$

素因数の和:2271

約数の個数: 32

約数和(自身を含む): 36780480

約数和(自身を除く): 20524040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 2063, 3940, 4126, 7880, 8252, 10315, 16504, 20630, 41260, 82520, 406411, 812822, 1625644, 2032055, 3251288, 4064110, 8128220, 16256440]

約数ペア:

[(1, 16256440), (2, 8128220), (4, 4064110), (5, 3251288), (8, 2032055), (10, 1625644), (20, 812822), (40, 406411), (197, 82520), (394, 41260), (788, 20630), (985, 16504), (1576, 10315), (1970, 8252), (2063, 7880), (3940, 4126)]