20828769

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{28109}}^1$

素因数の和:28144

約数の個数: 16

約数和(自身を含む): 31483200

約数和(自身を除く): 10654431

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 28109, 84327, 365417, 534071, 1096251, 1602213, 6942923, 20828769]

約数ペア:

[(1, 20828769), (3, 6942923), (13, 1602213), (19, 1096251), (39, 534071), (57, 365417), (247, 84327), (741, 28109)]