18261860

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8377}}^1$

素因数の和:8495

約数の個数: 24

約数和(自身を含む): 38706360

約数和(自身を除く): 20444500

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 8377, 16754, 33508, 41885, 83770, 167540, 913093, 1826186, 3652372, 4565465, 9130930, 18261860]

約数ペア:

[(1, 18261860), (2, 9130930), (4, 4565465), (5, 3652372), (10, 1826186), (20, 913093), (109, 167540), (218, 83770), (436, 41885), (545, 33508), (1090, 16754), (2180, 8377)]