87111380

素因数分解:

$2^2\times 5^1\times {\mathrm{2087}}^2$

素因数の和:4183

約数の個数: 18

約数和(自身を含む): 183021594

約数和(自身を除く): 95910214

約数列:

[1, 2, 4, 5, 10, 20, 2087, 4174, 8348, 10435, 20870, 41740, 4355569, 8711138, 17422276, 21777845, 43555690, 87111380]

約数ペア:

[(1, 87111380), (2, 43555690), (4, 21777845), (5, 17422276), (10, 8711138), (20, 4355569), (2087, 41740), (4174, 20870), (8348, 10435)]