20689329

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{709}}^1$

素因数の和:920

約数の個数: 16

約数和(自身を含む): 28218240

約数和(自身を除く): 7528911

約数列:

[1, 3, 71, 137, 213, 411, 709, 2127, 9727, 29181, 50339, 97133, 151017, 291399, 6896443, 20689329]

約数ペア:

[(1, 20689329), (3, 6896443), (71, 291399), (137, 151017), (213, 97133), (411, 50339), (709, 29181), (2127, 9727)]