1640280080

素因数分解:

$2^4\times 5^1\times {\mathrm{20503501}}^1$

素因数の和:20503514

約数の個数: 20

約数和(自身を含む): 3813651372

約数和(自身を除く): 2173371292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 20503501, 41007002, 82014004, 102517505, 164028008, 205035010, 328056016, 410070020, 820140040, 1640280080]

約数ペア:

[(1, 1640280080), (2, 820140040), (4, 410070020), (5, 328056016), (8, 205035010), (10, 164028008), (16, 102517505), (20, 82014004), (40, 41007002), (80, 20503501)]