18020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1$

素因数の和:79

約数の個数: 24

約数和(自身を含む): 40824

約数和(自身を除く): 22804

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 53, 68, 85, 106, 170, 212, 265, 340, 530, 901, 1060, 1802, 3604, 4505, 9010, 18020]

約数ペア:

[(1, 18020), (2, 9010), (4, 4505), (5, 3604), (10, 1802), (17, 1060), (20, 901), (34, 530), (53, 340), (68, 265), (85, 212), (106, 170)]