19888188

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{38543}}^1$

素因数の和:38593

約数の個数: 24

約数和(自身を含む): 47486208

約数和(自身を除く): 27598020

約数列:

[1, 2, 3, 4, 6, 12, 43, 86, 129, 172, 258, 516, 38543, 77086, 115629, 154172, 231258, 462516, 1657349, 3314698, 4972047, 6629396, 9944094, 19888188]

約数ペア:

[(1, 19888188), (2, 9944094), (3, 6629396), (4, 4972047), (6, 3314698), (12, 1657349), (43, 462516), (86, 231258), (129, 154172), (172, 115629), (258, 77086), (516, 38543)]