21381456

素因数分解:

$2^4\times 3^1\times {\mathrm{445447}}^1$

素因数の和:445458

約数の個数: 20

約数和(自身を含む): 55235552

約数和(自身を除く): 33854096

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 445447, 890894, 1336341, 1781788, 2672682, 3563576, 5345364, 7127152, 10690728, 21381456]

約数ペア:

[(1, 21381456), (2, 10690728), (3, 7127152), (4, 5345364), (6, 3563576), (8, 2672682), (12, 1781788), (16, 1336341), (24, 890894), (48, 445447)]