18121563

素因数分解:

$3^4\times {\mathrm{409}}^1\times {\mathrm{547}}^1$

素因数の和:968

約数の個数: 20

約数和(自身を含む): 27186280

約数和(自身を除く): 9064717

約数列:

[1, 3, 9, 27, 81, 409, 547, 1227, 1641, 3681, 4923, 11043, 14769, 33129, 44307, 223723, 671169, 2013507, 6040521, 18121563]

約数ペア:

[(1, 18121563), (3, 6040521), (9, 2013507), (27, 671169), (81, 223723), (409, 44307), (547, 33129), (1227, 14769), (1641, 11043), (3681, 4923)]