18090070

素因数分解:

$2^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{4423}}^1$

素因数の和:4839

約数の個数: 16

約数和(自身を含む): 32649120

約数和(自身を除く): 14559050

約数列:

[1, 2, 5, 10, 409, 818, 2045, 4090, 4423, 8846, 22115, 44230, 1809007, 3618014, 9045035, 18090070]

約数ペア:

[(1, 18090070), (2, 9045035), (5, 3618014), (10, 1809007), (409, 44230), (818, 22115), (2045, 8846), (4090, 4423)]