20012181

素因数分解:

$3^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{6311}}^1$

素因数の和:6472

約数の個数: 16

約数和(自身を含む): 30701568

約数和(自身を除く): 10689387

約数列:

[1, 3, 7, 21, 151, 453, 1057, 3171, 6311, 18933, 44177, 132531, 952961, 2858883, 6670727, 20012181]

約数ペア:

[(1, 20012181), (3, 6670727), (7, 2858883), (21, 952961), (151, 132531), (453, 44177), (1057, 18933), (3171, 6311)]