18420777

素因数分解:

$3^4\times {\mathrm{277}}^1\times {\mathrm{821}}^1$

素因数の和:1110

約数の個数: 20

約数和(自身を含む): 27650436

約数和(自身を除く): 9229659

約数列:

[1, 3, 9, 27, 81, 277, 821, 831, 2463, 2493, 7389, 7479, 22167, 22437, 66501, 227417, 682251, 2046753, 6140259, 18420777]

約数ペア:

[(1, 18420777), (3, 6140259), (9, 2046753), (27, 682251), (81, 227417), (277, 66501), (821, 22437), (831, 22167), (2463, 7479), (2493, 7389)]