19899837

素因数分解:

$3^4\times {\mathrm{151}}^1\times {\mathrm{1627}}^1$

素因数の和:1790

約数の個数: 20

約数和(自身を含む): 29942176

約数和(自身を除く): 10042339

約数列:

[1, 3, 9, 27, 81, 151, 453, 1359, 1627, 4077, 4881, 12231, 14643, 43929, 131787, 245677, 737031, 2211093, 6633279, 19899837]

約数ペア:

[(1, 19899837), (3, 6633279), (9, 2211093), (27, 737031), (81, 245677), (151, 131787), (453, 43929), (1359, 14643), (1627, 12231), (4077, 4881)]