20809395

素因数分解:

$3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2837}}^1$

素因数の和:3011

約数の個数: 24

約数和(自身を含む): 36303696

約数和(自身を除く): 15494301

約数列:

[1, 3, 5, 9, 15, 45, 163, 489, 815, 1467, 2445, 2837, 7335, 8511, 14185, 25533, 42555, 127665, 462431, 1387293, 2312155, 4161879, 6936465, 20809395]

約数ペア:

[(1, 20809395), (3, 6936465), (5, 4161879), (9, 2312155), (15, 1387293), (45, 462431), (163, 127665), (489, 42555), (815, 25533), (1467, 14185), (2445, 8511), (2837, 7335)]