66721208

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{193957}}^1$

素因数の和:194006

約数の個数: 16

約数和(自身を含む): 128012280

約数和(自身を除く): 61291072

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 193957, 387914, 775828, 1551656, 8340151, 16680302, 33360604, 66721208]

約数ペア:

[(1, 66721208), (2, 33360604), (4, 16680302), (8, 8340151), (43, 1551656), (86, 775828), (172, 387914), (344, 193957)]