18489580

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{17443}}^1$

素因数の和:17505

約数の個数: 24

約数和(自身を含む): 39562992

約数和(自身を除く): 21073412

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 17443, 34886, 69772, 87215, 174430, 348860, 924479, 1848958, 3697916, 4622395, 9244790, 18489580]

約数ペア:

[(1, 18489580), (2, 9244790), (4, 4622395), (5, 3697916), (10, 1848958), (20, 924479), (53, 348860), (106, 174430), (212, 87215), (265, 69772), (530, 34886), (1060, 17443)]