21805659

素因数分解:

$3^3\times {\mathrm{79}}^1\times {\mathrm{10223}}^1$

素因数の和:10311

約数の個数: 16

約数和(自身を含む): 32716800

約数和(自身を除く): 10911141

約数列:

[1, 3, 9, 27, 79, 237, 711, 2133, 10223, 30669, 92007, 276021, 807617, 2422851, 7268553, 21805659]

約数ペア:

[(1, 21805659), (3, 7268553), (9, 2422851), (27, 807617), (79, 276021), (237, 92007), (711, 30669), (2133, 10223)]