20372989

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1709}}^1$

素因数の和:1860

約数の個数: 16

約数和(自身を含む): 25280640

約数和(自身を除く): 4907651

約数列:

[1, 7, 13, 91, 131, 917, 1703, 1709, 11921, 11963, 22217, 155519, 223879, 1567153, 2910427, 20372989]

約数ペア:

[(1, 20372989), (7, 2910427), (13, 1567153), (91, 223879), (131, 155519), (917, 22217), (1703, 11963), (1709, 11921)]