20219858840

素因数分解:

$2^3\times 5^1\times {\mathrm{505496471}}^1$

素因数の和:505496482

約数の個数: 16

約数和(自身を含む): 45494682480

約数和(自身を除く): 25274823640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 505496471, 1010992942, 2021985884, 2527482355, 4043971768, 5054964710, 10109929420, 20219858840]

約数ペア:

[(1, 20219858840), (2, 10109929420), (4, 5054964710), (5, 4043971768), (8, 2527482355), (10, 2021985884), (20, 1010992942), (40, 505496471)]