20921007

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{1571}}^1$

素因数の和:1790

約数の個数: 16

約数和(自身を含む): 29276928

約数和(自身を除く): 8355921

約数列:

[1, 3, 23, 69, 193, 579, 1571, 4439, 4713, 13317, 36133, 108399, 303203, 909609, 6973669, 20921007]

約数ペア:

[(1, 20921007), (3, 6973669), (23, 909609), (69, 303203), (193, 108399), (579, 36133), (1571, 13317), (4439, 4713)]