20864945

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{4673}}^1$

素因数の和:4744

約数の個数: 16

約数和(自身を含む): 26922240

約数和(自身を除く): 6057295

約数列:

[1, 5, 19, 47, 95, 235, 893, 4465, 4673, 23365, 88787, 219631, 443935, 1098155, 4172989, 20864945]

約数ペア:

[(1, 20864945), (5, 4172989), (19, 1098155), (47, 443935), (95, 219631), (235, 88787), (893, 23365), (4465, 4673)]