18188990

素因数分解:

$2^1\times 5^1\times {\mathrm{449}}^1\times {\mathrm{4051}}^1$

素因数の和:4507

約数の個数: 16

約数和(自身を含む): 32821200

約数和(自身を除く): 14632210

約数列:

[1, 2, 5, 10, 449, 898, 2245, 4051, 4490, 8102, 20255, 40510, 1818899, 3637798, 9094495, 18188990]

約数ペア:

[(1, 18188990), (2, 9094495), (5, 3637798), (10, 1818899), (449, 40510), (898, 20255), (2245, 8102), (4051, 4490)]