1688080

素因数分解:

$2^4\times 5^1\times {\mathrm{21101}}^1$

素因数の和:21114

約数の個数: 20

約数和(自身を含む): 3924972

約数和(自身を除く): 2236892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 21101, 42202, 84404, 105505, 168808, 211010, 337616, 422020, 844040, 1688080]

約数ペア:

[(1, 1688080), (2, 844040), (4, 422020), (5, 337616), (8, 211010), (10, 168808), (16, 105505), (20, 84404), (40, 42202), (80, 21101)]