19980491

素因数分解:

${\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{373}}^1$

素因数の和:550

約数の個数: 16

約数和(自身を含む): 22296384

約数和(自身を除く): 2315893

約数列:

[1, 17, 23, 137, 373, 391, 2329, 3151, 6341, 8579, 51101, 53567, 145843, 868717, 1175323, 19980491]

約数ペア:

[(1, 19980491), (17, 1175323), (23, 868717), (137, 145843), (373, 53567), (391, 51101), (2329, 8579), (3151, 6341)]