21387864

素因数分解:

$2^3\times 3^1\times {\mathrm{891161}}^1$

素因数の和:891170

約数の個数: 16

約数和(自身を含む): 53469720

約数和(自身を除く): 32081856

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 891161, 1782322, 2673483, 3564644, 5346966, 7129288, 10693932, 21387864]

約数ペア:

[(1, 21387864), (2, 10693932), (3, 7129288), (4, 5346966), (6, 3564644), (8, 2673483), (12, 1782322), (24, 891161)]