20018635

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43997}}^1$

素因数の和:44022

約数の個数: 16

約数和(自身を含む): 29566656

約数和(自身を除く): 9548021

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 43997, 219985, 307979, 571961, 1539895, 2859805, 4003727, 20018635]

約数ペア:

[(1, 20018635), (5, 4003727), (7, 2859805), (13, 1539895), (35, 571961), (65, 307979), (91, 219985), (455, 43997)]