21172719

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{3697}}^1$

素因数の和:3806

約数の個数: 16

約数和(自身を含む): 29820672

約数和(自身を除く): 8647953

約数列:

[1, 3, 23, 69, 83, 249, 1909, 3697, 5727, 11091, 85031, 255093, 306851, 920553, 7057573, 21172719]

約数ペア:

[(1, 21172719), (3, 7057573), (23, 920553), (69, 306851), (83, 255093), (249, 85031), (1909, 11091), (3697, 5727)]