20849305

素因数分解:

$5^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:504

約数の個数: 16

約数和(自身を含む): 25502400

約数和(自身を除く): 4653095

約数列:

[1, 5, 131, 139, 229, 655, 695, 1145, 18209, 29999, 31831, 91045, 149995, 159155, 4169861, 20849305]

約数ペア:

[(1, 20849305), (5, 4169861), (131, 159155), (139, 149995), (229, 91045), (655, 31831), (695, 29999), (1145, 18209)]