20100040

素因数分解:

$2^3\times 5^1\times {\mathrm{502501}}^1$

素因数の和:502512

約数の個数: 16

約数和(自身を含む): 45225180

約数和(自身を除く): 25125140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 502501, 1005002, 2010004, 2512505, 4020008, 5025010, 10050020, 20100040]

約数ペア:

[(1, 20100040), (2, 10050020), (4, 5025010), (5, 4020008), (8, 2512505), (10, 2010004), (20, 1005002), (40, 502501)]