40200080

素因数分解:

$2^4\times 5^1\times {\mathrm{502501}}^1$

素因数の和:502514

約数の個数: 20

約数和(自身を含む): 93465372

約数和(自身を除く): 53265292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 502501, 1005002, 2010004, 2512505, 4020008, 5025010, 8040016, 10050020, 20100040, 40200080]

約数ペア:

[(1, 40200080), (2, 20100040), (4, 10050020), (5, 8040016), (8, 5025010), (10, 4020008), (16, 2512505), (20, 2010004), (40, 1005002), (80, 502501)]