21557367

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{61417}}^1$

素因数の和:61439

約数の個数: 16

約数和(自身を含む): 34394080

約数和(自身を除く): 12836713

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 61417, 184251, 552753, 798421, 1658259, 2395263, 7185789, 21557367]

約数ペア:

[(1, 21557367), (3, 7185789), (9, 2395263), (13, 1658259), (27, 798421), (39, 552753), (117, 184251), (351, 61417)]