21353556

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{254209}}^1$

素因数の和:254223

約数の個数: 24

約数和(自身を含む): 56943040

約数和(自身を除く): 35589484

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 254209, 508418, 762627, 1016836, 1525254, 1779463, 3050508, 3558926, 5338389, 7117852, 10676778, 21353556]

約数ペア:

[(1, 21353556), (2, 10676778), (3, 7117852), (4, 5338389), (6, 3558926), (7, 3050508), (12, 1779463), (14, 1525254), (21, 1016836), (28, 762627), (42, 508418), (84, 254209)]