3999447

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{139}}^2$

素因数の和:307

約数の個数: 18

約数和(自身を含む): 6071832

約数和(自身を除く): 2072385

約数列:

[1, 3, 9, 23, 69, 139, 207, 417, 1251, 3197, 9591, 19321, 28773, 57963, 173889, 444383, 1333149, 3999447]

約数ペア:

[(1, 3999447), (3, 1333149), (9, 444383), (23, 173889), (69, 57963), (139, 28773), (207, 19321), (417, 9591), (1251, 3197)]