21985864

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{45053}}^1$

素因数の和:45120

約数の個数: 16

約数和(自身を含む): 41900220

約数和(自身を除く): 19914356

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 45053, 90106, 180212, 360424, 2748233, 5496466, 10992932, 21985864]

約数ペア:

[(1, 21985864), (2, 10992932), (4, 5496466), (8, 2748233), (61, 360424), (122, 180212), (244, 90106), (488, 45053)]