20557089

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{8819}}^1$

素因数の和:8869

約数の個数: 24

約数和(自身を含む): 34856640

約数和(自身を除く): 14299551

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 8819, 26457, 61733, 79371, 185199, 326303, 555597, 978909, 2284121, 2936727, 6852363, 20557089]

約数ペア:

[(1, 20557089), (3, 6852363), (7, 2936727), (9, 2284121), (21, 978909), (37, 555597), (63, 326303), (111, 185199), (259, 79371), (333, 61733), (777, 26457), (2331, 8819)]