18418640

素因数分解:

$2^4\times 5^1\times {\mathrm{230233}}^1$

素因数の和:230246

約数の個数: 20

約数和(自身を含む): 42823524

約数和(自身を除く): 24404884

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 230233, 460466, 920932, 1151165, 1841864, 2302330, 3683728, 4604660, 9209320, 18418640]

約数ペア:

[(1, 18418640), (2, 9209320), (4, 4604660), (5, 3683728), (8, 2302330), (10, 1841864), (16, 1151165), (20, 920932), (40, 460466), (80, 230233)]