21855249

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{14369}}^1$

素因数の和:14401

約数の個数: 18

約数和(自身を含む): 34186230

約数和(自身を除く): 12330981

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 14369, 43107, 129321, 186797, 560391, 1681173, 2428361, 7285083, 21855249]

約数ペア:

[(1, 21855249), (3, 7285083), (9, 2428361), (13, 1681173), (39, 560391), (117, 186797), (169, 129321), (507, 43107), (1521, 14369)]