20806618

素因数分解:

$2^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{307}}^1$

素因数の和:466

約数の個数: 32

約数和(自身を含む): 36900864

約数和(自身を除く): 16094246

約数列:

[1, 2, 7, 14, 47, 94, 103, 206, 307, 329, 614, 658, 721, 1442, 2149, 4298, 4841, 9682, 14429, 28858, 31621, 33887, 63242, 67774, 101003, 202006, 221347, 442694, 1486187, 2972374, 10403309, 20806618]

約数ペア:

[(1, 20806618), (2, 10403309), (7, 2972374), (14, 1486187), (47, 442694), (94, 221347), (103, 202006), (206, 101003), (307, 67774), (329, 63242), (614, 33887), (658, 31621), (721, 28858), (1442, 14429), (2149, 9682), (4298, 4841)]