19641560

素因数分解:

$2^3\times 5^1\times {\mathrm{491039}}^1$

素因数の和:491050

約数の個数: 16

約数和(自身を含む): 44193600

約数和(自身を除く): 24552040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491039, 982078, 1964156, 2455195, 3928312, 4910390, 9820780, 19641560]

約数ペア:

[(1, 19641560), (2, 9820780), (4, 4910390), (5, 3928312), (8, 2455195), (10, 1964156), (20, 982078), (40, 491039)]