20938385

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{2459}}^1$

素因数の和:2608

約数の個数: 16

約数和(自身を含む): 27276480

約数和(自身を除く): 6338095

約数列:

[1, 5, 13, 65, 131, 655, 1703, 2459, 8515, 12295, 31967, 159835, 322129, 1610645, 4187677, 20938385]

約数ペア:

[(1, 20938385), (5, 4187677), (13, 1610645), (65, 322129), (131, 159835), (655, 31967), (1703, 12295), (2459, 8515)]