20017820

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43517}}^1$

素因数の和:43549

約数の個数: 24

約数和(自身を含む): 43866144

約数和(自身を除く): 23848324

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 43517, 87034, 174068, 217585, 435170, 870340, 1000891, 2001782, 4003564, 5004455, 10008910, 20017820]

約数ペア:

[(1, 20017820), (2, 10008910), (4, 5004455), (5, 4003564), (10, 2001782), (20, 1000891), (23, 870340), (46, 435170), (92, 217585), (115, 174068), (230, 87034), (460, 43517)]