18870140

素因数分解:

$2^2\times 5^1\times {\mathrm{433}}^1\times {\mathrm{2179}}^1$

素因数の和:2621

約数の個数: 24

約数和(自身を含む): 39737040

約数和(自身を除く): 20866900

約数列:

[1, 2, 4, 5, 10, 20, 433, 866, 1732, 2165, 2179, 4330, 4358, 8660, 8716, 10895, 21790, 43580, 943507, 1887014, 3774028, 4717535, 9435070, 18870140]

約数ペア:

[(1, 18870140), (2, 9435070), (4, 4717535), (5, 3774028), (10, 1887014), (20, 943507), (433, 43580), (866, 21790), (1732, 10895), (2165, 8716), (2179, 8660), (4330, 4358)]