408040520

素因数分解:

$2^3\times 5^1\times {\mathrm{10201013}}^1$

素因数の和:10201024

約数の個数: 16

約数和(自身を含む): 918091260

約数和(自身を除く): 510050740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 10201013, 20402026, 40804052, 51005065, 81608104, 102010130, 204020260, 408040520]

約数ペア:

[(1, 408040520), (2, 204020260), (4, 102010130), (5, 81608104), (8, 51005065), (10, 40804052), (20, 20402026), (40, 10201013)]