20178440080

素因数分解:

$2^4\times 5^1\times {\mathrm{252230501}}^1$

素因数の和:252230514

約数の個数: 20

約数和(自身を含む): 46914873372

約数和(自身を除く): 26736433292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 252230501, 504461002, 1008922004, 1261152505, 2017844008, 2522305010, 4035688016, 5044610020, 10089220040, 20178440080]

約数ペア:

[(1, 20178440080), (2, 10089220040), (4, 5044610020), (5, 4035688016), (8, 2522305010), (10, 2017844008), (16, 1261152505), (20, 1008922004), (40, 504461002), (80, 252230501)]