21163810

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{124493}}^1$

素因数の和:124517

約数の個数: 16

約数和(自身を含む): 40336056

約数和(自身を除く): 19172246

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 124493, 248986, 622465, 1244930, 2116381, 4232762, 10581905, 21163810]

約数ペア:

[(1, 21163810), (2, 10581905), (5, 4232762), (10, 2116381), (17, 1244930), (34, 622465), (85, 248986), (170, 124493)]