21287543

素因数分解:

${\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{283}}^1$

素因数の和:446

約数の個数: 16

約数和(自身を含む): 23310720

約数和(自身を除く): 2023177

約数列:

[1, 19, 37, 107, 283, 703, 2033, 3959, 5377, 10471, 30281, 75221, 198949, 575339, 1120397, 21287543]

約数ペア:

[(1, 21287543), (19, 1120397), (37, 575339), (107, 198949), (283, 75221), (703, 30281), (2033, 10471), (3959, 5377)]