18420021

素因数分解:

$3^3\times {\mathrm{643}}^1\times {\mathrm{1061}}^1$

素因数の和:1713

約数の個数: 16

約数和(自身を含む): 27357120

約数和(自身を除く): 8937099

約数列:

[1, 3, 9, 27, 643, 1061, 1929, 3183, 5787, 9549, 17361, 28647, 682223, 2046669, 6140007, 18420021]

約数ペア:

[(1, 18420021), (3, 6140007), (9, 2046669), (27, 682223), (643, 28647), (1061, 17361), (1929, 9549), (3183, 5787)]