21870081

素因数分解:

$3^4\times {\mathrm{270001}}^1$

素因数の和:270013

約数の個数: 10

約数和(自身を含む): 32670242

約数和(自身を除く): 10800161

約数列:

[1, 3, 9, 27, 81, 270001, 810003, 2430009, 7290027, 21870081]

約数ペア:

[(1, 21870081), (3, 7290027), (9, 2430009), (27, 810003), (81, 270001)]