320021320

素因数分解:

$2^3\times 5^1\times {\mathrm{8000533}}^1$

素因数の和:8000544

約数の個数: 16

約数和(自身を含む): 720048060

約数和(自身を除く): 400026740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 8000533, 16001066, 32002132, 40002665, 64004264, 80005330, 160010660, 320021320]

約数ペア:

[(1, 320021320), (2, 160010660), (4, 80005330), (5, 64004264), (8, 40002665), (10, 32002132), (20, 16001066), (40, 8000533)]