21818419

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{1381}}^1$

素因数の和:1486

約数の個数: 16

約数和(自身を含む): 26047936

約数和(自身を除く): 4229517

約数列:

[1, 7, 37, 61, 259, 427, 1381, 2257, 9667, 15799, 51097, 84241, 357679, 589687, 3116917, 21818419]

約数ペア:

[(1, 21818419), (7, 3116917), (37, 589687), (61, 357679), (259, 84241), (427, 51097), (1381, 15799), (2257, 9667)]