816080

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^2$

素因数の和:215

約数の個数: 30

約数和(自身を含む): 1916358

約数和(自身を除く): 1100278

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 4040, 8080, 10201, 20402, 40804, 51005, 81608, 102010, 163216, 204020, 408040, 816080]

約数ペア:

[(1, 816080), (2, 408040), (4, 204020), (5, 163216), (8, 102010), (10, 81608), (16, 51005), (20, 40804), (40, 20402), (80, 10201), (101, 8080), (202, 4040), (404, 2020), (505, 1616), (808, 1010)]