20218160

素因数分解:

$2^4\times 5^1\times {\mathrm{252727}}^1$

素因数の和:252740

約数の個数: 20

約数和(自身を含む): 47007408

約数和(自身を除く): 26789248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 252727, 505454, 1010908, 1263635, 2021816, 2527270, 4043632, 5054540, 10109080, 20218160]

約数ペア:

[(1, 20218160), (2, 10109080), (4, 5054540), (5, 4043632), (8, 2527270), (10, 2021816), (16, 1263635), (20, 1010908), (40, 505454), (80, 252727)]