19953309

素因数分解:

$3^1\times {\mathrm{73}}^1\times {\mathrm{179}}^1\times {\mathrm{509}}^1$

素因数の和:764

約数の個数: 16

約数和(自身を含む): 27172800

約数和(自身を除く): 7219491

約数列:

[1, 3, 73, 179, 219, 509, 537, 1527, 13067, 37157, 39201, 91111, 111471, 273333, 6651103, 19953309]

約数ペア:

[(1, 19953309), (3, 6651103), (73, 273333), (179, 111471), (219, 91111), (509, 39201), (537, 37157), (1527, 13067)]