20690012

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{38891}}^1$

素因数の和:38921

約数の個数: 24

約数和(自身を含む): 43559040

約数和(自身を除く): 22869028

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 38891, 77782, 155564, 272237, 544474, 738929, 1088948, 1477858, 2955716, 5172503, 10345006, 20690012]

約数ペア:

[(1, 20690012), (2, 10345006), (4, 5172503), (7, 2955716), (14, 1477858), (19, 1088948), (28, 738929), (38, 544474), (76, 272237), (133, 155564), (266, 77782), (532, 38891)]