20213560

素因数分解:

$2^3\times 5^1\times {\mathrm{505339}}^1$

素因数の和:505350

約数の個数: 16

約数和(自身を含む): 45480600

約数和(自身を除く): 25267040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 505339, 1010678, 2021356, 2526695, 4042712, 5053390, 10106780, 20213560]

約数ペア:

[(1, 20213560), (2, 10106780), (4, 5053390), (5, 4042712), (8, 2526695), (10, 2021356), (20, 1010678), (40, 505339)]