20811789

素因数分解:

$3^3\times {\mathrm{73}}^1\times {\mathrm{10559}}^1$

素因数の和:10641

約数の個数: 16

約数和(自身を含む): 31257600

約数和(自身を除く): 10445811

約数列:

[1, 3, 9, 27, 73, 219, 657, 1971, 10559, 31677, 95031, 285093, 770807, 2312421, 6937263, 20811789]

約数ペア:

[(1, 20811789), (3, 6937263), (9, 2312421), (27, 770807), (73, 285093), (219, 95031), (657, 31677), (1971, 10559)]