28257879

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{5531}}^1$

素因数の和:5678

約数の個数: 16

約数和(自身を含む): 40892544

約数和(自身を除く): 12634665

約数列:

[1, 3, 13, 39, 131, 393, 1703, 5109, 5531, 16593, 71903, 215709, 724561, 2173683, 9419293, 28257879]

約数ペア:

[(1, 28257879), (3, 9419293), (13, 2173683), (39, 724561), (131, 215709), (393, 71903), (1703, 16593), (5109, 5531)]