21079749

素因数分解:

$3^1\times {\mathrm{97}}^1\times {\mathrm{107}}^1\times {\mathrm{677}}^1$

素因数の和:884

約数の個数: 16

約数和(自身を含む): 28703808

約数和(自身を除く): 7624059

約数列:

[1, 3, 97, 107, 291, 321, 677, 2031, 10379, 31137, 65669, 72439, 197007, 217317, 7026583, 21079749]

約数ペア:

[(1, 21079749), (3, 7026583), (97, 217317), (107, 197007), (291, 72439), (321, 65669), (677, 31137), (2031, 10379)]