18889521

素因数分解:

$3^1\times 7^1\times {\mathrm{881}}^1\times {\mathrm{1021}}^1$

素因数の和:1912

約数の個数: 16

約数和(自身を含む): 28844928

約数和(自身を除く): 9955407

約数列:

[1, 3, 7, 21, 881, 1021, 2643, 3063, 6167, 7147, 18501, 21441, 899501, 2698503, 6296507, 18889521]

約数ペア:

[(1, 18889521), (3, 6296507), (7, 2698503), (21, 899501), (881, 21441), (1021, 18501), (2643, 7147), (3063, 6167)]