16217620

素因数分解:

$2^2\times 5^1\times {\mathrm{810881}}^1$

素因数の和:810890

約数の個数: 12

約数和(自身を含む): 34057044

約数和(自身を除く): 17839424

約数列:

[1, 2, 4, 5, 10, 20, 810881, 1621762, 3243524, 4054405, 8108810, 16217620]

約数ペア:

[(1, 16217620), (2, 8108810), (4, 4054405), (5, 3243524), (10, 1621762), (20, 810881)]