19985260

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4481}}^1$

素因数の和:4713

約数の個数: 24

約数和(自身を含む): 42166656

約数和(自身を除く): 22181396

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 4481, 8962, 17924, 22405, 44810, 89620, 999263, 1998526, 3997052, 4996315, 9992630, 19985260]

約数ペア:

[(1, 19985260), (2, 9992630), (4, 4996315), (5, 3997052), (10, 1998526), (20, 999263), (223, 89620), (446, 44810), (892, 22405), (1115, 17924), (2230, 8962), (4460, 4481)]