21132981

素因数分解:

$3^8\times {\mathrm{3221}}^1$

素因数の和:3245

約数の個数: 18

約数和(自身を含む): 31707702

約数和(自身を除く): 10574721

約数列:

[1, 3, 9, 27, 81, 243, 729, 2187, 3221, 6561, 9663, 28989, 86967, 260901, 782703, 2348109, 7044327, 21132981]

約数ペア:

[(1, 21132981), (3, 7044327), (9, 2348109), (27, 782703), (81, 260901), (243, 86967), (729, 28989), (2187, 9663), (3221, 6561)]