21787293

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{12457}}^1$

素因数の和:12524

約数の個数: 16

約数和(自身を含む): 32291136

約数和(自身を除く): 10503843

約数列:

[1, 3, 11, 33, 53, 159, 583, 1749, 12457, 37371, 137027, 411081, 660221, 1980663, 7262431, 21787293]

約数ペア:

[(1, 21787293), (3, 7262431), (11, 1980663), (33, 660221), (53, 411081), (159, 137027), (583, 37371), (1749, 12457)]