20940965

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{809}}^1$

素因数の和:1012

約数の個数: 16

約数和(自身を含む): 26127360

約数和(自身を除く): 5186395

約数列:

[1, 5, 31, 155, 167, 809, 835, 4045, 5177, 25079, 25885, 125395, 135103, 675515, 4188193, 20940965]

約数ペア:

[(1, 20940965), (5, 4188193), (31, 675515), (155, 135103), (167, 125395), (809, 25885), (835, 25079), (4045, 5177)]