18129380

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{22109}}^1$

素因数の和:22159

約数の個数: 24

約数和(自身を含む): 39002040

約数和(自身を除く): 20872660

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 22109, 44218, 88436, 110545, 221090, 442180, 906469, 1812938, 3625876, 4532345, 9064690, 18129380]

約数ペア:

[(1, 18129380), (2, 9064690), (4, 4532345), (5, 3625876), (10, 1812938), (20, 906469), (41, 442180), (82, 221090), (164, 110545), (205, 88436), (410, 44218), (820, 22109)]