21370989

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{2341}}^1$

素因数の和:2540

約数の個数: 16

約数和(自身を含む): 30352320

約数和(自身を除く): 8981331

約数列:

[1, 3, 17, 51, 179, 537, 2341, 3043, 7023, 9129, 39797, 119391, 419039, 1257117, 7123663, 21370989]

約数ペア:

[(1, 21370989), (3, 7123663), (17, 1257117), (51, 419039), (179, 119391), (537, 39797), (2341, 9129), (3043, 7023)]