21721478

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{2081}}^1$

素因数の和:2407

約数の個数: 16

約数和(自身を含む): 34627824

約数和(自身を除く): 12906346

約数列:

[1, 2, 17, 34, 307, 614, 2081, 4162, 5219, 10438, 35377, 70754, 638867, 1277734, 10860739, 21721478]

約数ペア:

[(1, 21721478), (2, 10860739), (17, 1277734), (34, 638867), (307, 70754), (614, 35377), (2081, 10438), (4162, 5219)]