21185281

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{373}}^1$

素因数の和:660

約数の個数: 16

約数和(自身を含む): 24315984

約数和(自身を除く): 3130703

約数列:

[1, 13, 17, 221, 257, 373, 3341, 4369, 4849, 6341, 56797, 82433, 95861, 1246193, 1629637, 21185281]

約数ペア:

[(1, 21185281), (13, 1629637), (17, 1246193), (221, 95861), (257, 82433), (373, 56797), (3341, 6341), (4369, 4849)]