19990864

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{54323}}^1$

素因数の和:54354

約数の個数: 20

約数和(自身を含む): 40417056

約数和(自身を除く): 20426192

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 54323, 108646, 217292, 434584, 869168, 1249429, 2498858, 4997716, 9995432, 19990864]

約数ペア:

[(1, 19990864), (2, 9995432), (4, 4997716), (8, 2498858), (16, 1249429), (23, 869168), (46, 434584), (92, 217292), (184, 108646), (368, 54323)]