19807879

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{5309}}^1$

素因数の和:5370

約数の個数: 16

約数和(自身を含む): 24978240

約数和(自身を除く): 5170361

約数列:

[1, 7, 13, 41, 91, 287, 533, 3731, 5309, 37163, 69017, 217669, 483119, 1523683, 2829697, 19807879]

約数ペア:

[(1, 19807879), (7, 2829697), (13, 1523683), (41, 483119), (91, 217669), (287, 69017), (533, 37163), (3731, 5309)]