21152718

素因数分解:

$2^1\times 3^3\times {\mathrm{391717}}^1$

素因数の和:391728

約数の個数: 16

約数和(自身を含む): 47006160

約数和(自身を除く): 25853442

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 391717, 783434, 1175151, 2350302, 3525453, 7050906, 10576359, 21152718]

約数ペア:

[(1, 21152718), (2, 10576359), (3, 7050906), (6, 3525453), (9, 2350302), (18, 1175151), (27, 783434), (54, 391717)]