20389678

素因数分解:

$2^1\times {\mathrm{101}}^1\times {\mathrm{193}}^1\times {\mathrm{523}}^1$

素因数の和:819

約数の個数: 16

約数和(自身を含む): 31106736

約数和(自身を除く): 10717058

約数列:

[1, 2, 101, 193, 202, 386, 523, 1046, 19493, 38986, 52823, 100939, 105646, 201878, 10194839, 20389678]

約数ペア:

[(1, 20389678), (2, 10194839), (101, 201878), (193, 105646), (202, 100939), (386, 52823), (523, 38986), (1046, 19493)]