20881810

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{29411}}^1$

素因数の和:29489

約数の個数: 16

約数和(自身を含む): 38117952

約数和(自身を除く): 17236142

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 29411, 58822, 147055, 294110, 2088181, 4176362, 10440905, 20881810]

約数ペア:

[(1, 20881810), (2, 10440905), (5, 4176362), (10, 2088181), (71, 294110), (142, 147055), (355, 58822), (710, 29411)]