19128220

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1879}}^1$

素因数の和:2397

約数の個数: 24

約数和(自身を含む): 40269600

約数和(自身を除く): 21141380

約数列:

[1, 2, 4, 5, 10, 20, 509, 1018, 1879, 2036, 2545, 3758, 5090, 7516, 9395, 10180, 18790, 37580, 956411, 1912822, 3825644, 4782055, 9564110, 19128220]

約数ペア:

[(1, 19128220), (2, 9564110), (4, 4782055), (5, 3825644), (10, 1912822), (20, 956411), (509, 37580), (1018, 18790), (1879, 10180), (2036, 9395), (2545, 7516), (3758, 5090)]