21906755

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{6359}}^1$

素因数の和:6430

約数の個数: 16

約数和(自身を含む): 28848960

約数和(自身を除く): 6942205

約数列:

[1, 5, 13, 53, 65, 265, 689, 3445, 6359, 31795, 82667, 337027, 413335, 1685135, 4381351, 21906755]

約数ペア:

[(1, 21906755), (5, 4381351), (13, 1685135), (53, 413335), (65, 337027), (265, 82667), (689, 31795), (3445, 6359)]