21609028

素因数分解:

$2^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{9769}}^1$

素因数の和:9859

約数の個数: 24

約数和(自身を含む): 43769600

約数和(自身を除く): 22160572

約数列:

[1, 2, 4, 7, 14, 28, 79, 158, 316, 553, 1106, 2212, 9769, 19538, 39076, 68383, 136766, 273532, 771751, 1543502, 3087004, 5402257, 10804514, 21609028]

約数ペア:

[(1, 21609028), (2, 10804514), (4, 5402257), (7, 3087004), (14, 1543502), (28, 771751), (79, 273532), (158, 136766), (316, 68383), (553, 39076), (1106, 19538), (2212, 9769)]