21038979

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{2441}}^1$

素因数の和:2487

約数の個数: 24

約数和(自身を含む): 32175792

約数和(自身を除く): 11136813

約数列:

[1, 3, 13, 17, 39, 51, 169, 221, 507, 663, 2441, 2873, 7323, 8619, 31733, 41497, 95199, 124491, 412529, 539461, 1237587, 1618383, 7012993, 21038979]

約数ペア:

[(1, 21038979), (3, 7012993), (13, 1618383), (17, 1237587), (39, 539461), (51, 412529), (169, 124491), (221, 95199), (507, 41497), (663, 31733), (2441, 8619), (2873, 7323)]