19913560

素因数分解:

$2^3\times 5^1\times {\mathrm{497839}}^1$

素因数の和:497850

約数の個数: 16

約数和(自身を含む): 44805600

約数和(自身を除く): 24892040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 497839, 995678, 1991356, 2489195, 3982712, 4978390, 9956780, 19913560]

約数ペア:

[(1, 19913560), (2, 9956780), (4, 4978390), (5, 3982712), (8, 2489195), (10, 1991356), (20, 995678), (40, 497839)]