18149020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{12781}}^1$

素因数の和:12861

約数の個数: 24

約数和(自身を含む): 38652768

約数和(自身を除く): 20503748

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 12781, 25562, 51124, 63905, 127810, 255620, 907451, 1814902, 3629804, 4537255, 9074510, 18149020]

約数ペア:

[(1, 18149020), (2, 9074510), (4, 4537255), (5, 3629804), (10, 1814902), (20, 907451), (71, 255620), (142, 127810), (284, 63905), (355, 51124), (710, 25562), (1420, 12781)]