20390019

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{131}}^1\times {\mathrm{307}}^1$

素因数の和:467

約数の個数: 24

約数和(自身を含む): 29760192

約数和(自身を除く): 9370173

約数列:

[1, 3, 13, 39, 131, 169, 307, 393, 507, 921, 1703, 3991, 5109, 11973, 22139, 40217, 51883, 66417, 120651, 155649, 522821, 1568463, 6796673, 20390019]

約数ペア:

[(1, 20390019), (3, 6796673), (13, 1568463), (39, 522821), (131, 155649), (169, 120651), (307, 66417), (393, 51883), (507, 40217), (921, 22139), (1703, 11973), (3991, 5109)]