19993988

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{15193}}^1$

素因数の和:15251

約数の個数: 24

約数和(自身を含む): 40841472

約数和(自身を除く): 20847484

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 15193, 30386, 60772, 106351, 212702, 425404, 714071, 1428142, 2856284, 4998497, 9996994, 19993988]

約数ペア:

[(1, 19993988), (2, 9996994), (4, 4998497), (7, 2856284), (14, 1428142), (28, 714071), (47, 425404), (94, 212702), (188, 106351), (329, 60772), (658, 30386), (1316, 15193)]