12721443

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{12889}}^1$

素因数の和:12946

約数の個数: 16

約数和(自身を含む): 19799040

約数和(自身を除く): 7077597

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 12889, 38667, 90223, 270669, 605783, 1817349, 4240481, 12721443]

約数ペア:

[(1, 12721443), (3, 4240481), (7, 1817349), (21, 605783), (47, 270669), (141, 90223), (329, 38667), (987, 12889)]