19818621

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{17903}}^1$

素因数の和:17953

約数の個数: 16

約数和(自身を含む): 30078720

約数和(自身を除く): 10260099

約数列:

[1, 3, 9, 27, 41, 123, 369, 1107, 17903, 53709, 161127, 483381, 734023, 2202069, 6606207, 19818621]

約数ペア:

[(1, 19818621), (3, 6606207), (9, 2202069), (27, 734023), (41, 483381), (123, 161127), (369, 53709), (1107, 17903)]