21771081

素因数分解:

$3^2\times {\mathrm{137}}^1\times {\mathrm{17657}}^1$

素因数の和:17800

約数の個数: 12

約数和(自身を含む): 31678452

約数和(自身を除く): 9907371

約数列:

[1, 3, 9, 137, 411, 1233, 17657, 52971, 158913, 2419009, 7257027, 21771081]

約数ペア:

[(1, 21771081), (3, 7257027), (9, 2419009), (137, 158913), (411, 52971), (1233, 17657)]