203880080

素因数分解:

$2^4\times 5^1\times {\mathrm{2548501}}^1$

素因数の和:2548514

約数の個数: 20

約数和(自身を含む): 474021372

約数和(自身を除く): 270141292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2548501, 5097002, 10194004, 12742505, 20388008, 25485010, 40776016, 50970020, 101940040, 203880080]

約数ペア:

[(1, 203880080), (2, 101940040), (4, 50970020), (5, 40776016), (8, 25485010), (10, 20388008), (16, 12742505), (20, 10194004), (40, 5097002), (80, 2548501)]