19998621

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{1093}}^1$

素因数の和:1225

約数の個数: 24

約数和(自身を含む): 30719520

約数和(自身を除く): 10720899

約数列:

[1, 3, 9, 19, 57, 107, 171, 321, 963, 1093, 2033, 3279, 6099, 9837, 18297, 20767, 62301, 116951, 186903, 350853, 1052559, 2222069, 6666207, 19998621]

約数ペア:

[(1, 19998621), (3, 6666207), (9, 2222069), (19, 1052559), (57, 350853), (107, 186903), (171, 116951), (321, 62301), (963, 20767), (1093, 18297), (2033, 9837), (3279, 6099)]