21281091

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{13309}}^1$

素因数の和:13366

約数の個数: 16

約数和(自身を含む): 31305120

約数和(自身を除く): 10024029

約数列:

[1, 3, 13, 39, 41, 123, 533, 1599, 13309, 39927, 173017, 519051, 545669, 1637007, 7093697, 21281091]

約数ペア:

[(1, 21281091), (3, 7093697), (13, 1637007), (39, 545669), (41, 519051), (123, 173017), (533, 39927), (1599, 13309)]