18009080

素因数分解:

$2^3\times 5^1\times {\mathrm{450227}}^1$

素因数の和:450238

約数の個数: 16

約数和(自身を含む): 40520520

約数和(自身を除く): 22511440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 450227, 900454, 1800908, 2251135, 3601816, 4502270, 9004540, 18009080]

約数ペア:

[(1, 18009080), (2, 9004540), (4, 4502270), (5, 3601816), (8, 2251135), (10, 1800908), (20, 900454), (40, 450227)]