20992465

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{2543}}^1$

素因数の和:2688

約数の個数: 16

約数和(自身を含む): 27353088

約数和(自身を除く): 6360623

約数列:

[1, 5, 13, 65, 127, 635, 1651, 2543, 8255, 12715, 33059, 165295, 322961, 1614805, 4198493, 20992465]

約数ペア:

[(1, 20992465), (5, 4198493), (13, 1614805), (65, 322961), (127, 165295), (635, 33059), (1651, 12715), (2543, 8255)]