20512990390

素因数分解:

$2^1\times 5^1\times {\mathrm{18493}}^1\times {\mathrm{110923}}^1$

素因数の和:129423

約数の個数: 16

約数和(自身を含む): 36925712208

約数和(自身を除く): 16412721818

約数列:

[1, 2, 5, 10, 18493, 36986, 92465, 110923, 184930, 221846, 554615, 1109230, 2051299039, 4102598078, 10256495195, 20512990390]

約数ペア:

[(1, 20512990390), (2, 10256495195), (5, 4102598078), (10, 2051299039), (18493, 1109230), (36986, 554615), (92465, 221846), (110923, 184930)]