28270390

素因数分解:

$2^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{15619}}^1$

素因数の和:15807

約数の個数: 16

約数和(自身を含む): 51171120

約数和(自身を除く): 22900730

約数列:

[1, 2, 5, 10, 181, 362, 905, 1810, 15619, 31238, 78095, 156190, 2827039, 5654078, 14135195, 28270390]

約数ペア:

[(1, 28270390), (2, 14135195), (5, 5654078), (10, 2827039), (181, 156190), (362, 78095), (905, 31238), (1810, 15619)]