20385245

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{1721}}^1$

素因数の和:1852

約数の個数: 16

約数和(自身を含む): 25788672

約数和(自身を除く): 5403427

約数列:

[1, 5, 23, 103, 115, 515, 1721, 2369, 8605, 11845, 39583, 177263, 197915, 886315, 4077049, 20385245]

約数ペア:

[(1, 20385245), (5, 4077049), (23, 886315), (103, 197915), (115, 177263), (515, 39583), (1721, 11845), (2369, 8605)]