20153049

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^2\times {\mathrm{701}}^1$

素因数の和:785

約数の個数: 24

約数和(自身を含む): 31606848

約数和(自身を除く): 11453799

約数列:

[1, 3, 7, 21, 37, 111, 259, 701, 777, 1369, 2103, 4107, 4907, 9583, 14721, 25937, 28749, 77811, 181559, 544677, 959669, 2879007, 6717683, 20153049]

約数ペア:

[(1, 20153049), (3, 6717683), (7, 2879007), (21, 959669), (37, 544677), (111, 181559), (259, 77811), (701, 28749), (777, 25937), (1369, 14721), (2103, 9583), (4107, 4907)]