18973580

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{2161}}^1$

素因数の和:2609

約数の個数: 24

約数和(自身を含む): 39953760

約数和(自身を除く): 20980180

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2161, 2195, 4322, 4390, 8644, 8780, 10805, 21610, 43220, 948679, 1897358, 3794716, 4743395, 9486790, 18973580]

約数ペア:

[(1, 18973580), (2, 9486790), (4, 4743395), (5, 3794716), (10, 1897358), (20, 948679), (439, 43220), (878, 21610), (1756, 10805), (2161, 8780), (2195, 8644), (4322, 4390)]