20804308

素因数分解:

$2^2\times 7^1\times {\mathrm{499}}^1\times {\mathrm{1489}}^1$

素因数の和:1999

約数の個数: 24

約数和(自身を含む): 41720000

約数和(自身を除く): 20915692

約数列:

[1, 2, 4, 7, 14, 28, 499, 998, 1489, 1996, 2978, 3493, 5956, 6986, 10423, 13972, 20846, 41692, 743011, 1486022, 2972044, 5201077, 10402154, 20804308]

約数ペア:

[(1, 20804308), (2, 10402154), (4, 5201077), (7, 2972044), (14, 1486022), (28, 743011), (499, 41692), (998, 20846), (1489, 13972), (1996, 10423), (2978, 6986), (3493, 5956)]