19811922

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{253999}}^1$

素因数の和:254017

約数の個数: 16

約数和(自身を含む): 42672000

約数和(自身を除く): 22860078

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 253999, 507998, 761997, 1523994, 3301987, 6603974, 9905961, 19811922]

約数ペア:

[(1, 19811922), (2, 9905961), (3, 6603974), (6, 3301987), (13, 1523994), (26, 761997), (39, 507998), (78, 253999)]