21339892

素因数分解:

$2^2\times 7^2\times {\mathrm{108877}}^1$

素因数の和:108895

約数の個数: 18

約数和(自身を含む): 43442322

約数和(自身を除く): 22102430

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 108877, 217754, 435508, 762139, 1524278, 3048556, 5334973, 10669946, 21339892]

約数ペア:

[(1, 21339892), (2, 10669946), (4, 5334973), (7, 3048556), (14, 1524278), (28, 762139), (49, 435508), (98, 217754), (196, 108877)]