19991298

素因数分解:

$2^1\times 3^1\times {\mathrm{163}}^1\times {\mathrm{20441}}^1$

素因数の和:20609

約数の個数: 16

約数和(自身を含む): 40229856

約数和(自身を除く): 20238558

約数列:

[1, 2, 3, 6, 163, 326, 489, 978, 20441, 40882, 61323, 122646, 3331883, 6663766, 9995649, 19991298]

約数ペア:

[(1, 19991298), (2, 9995649), (3, 6663766), (6, 3331883), (163, 122646), (326, 61323), (489, 40882), (978, 20441)]