19917333

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{10691}}^1$

素因数の和:10726

約数の個数: 20

約数和(自身を含む): 31049568

約数和(自身を除く): 11132235

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 10691, 32073, 96219, 245893, 288657, 737679, 865971, 2213037, 6639111, 19917333]

約数ペア:

[(1, 19917333), (3, 6639111), (9, 2213037), (23, 865971), (27, 737679), (69, 288657), (81, 245893), (207, 96219), (621, 32073), (1863, 10691)]