20551716

素因数分解:

$2^2\times 3^2\times {\mathrm{570881}}^1$

素因数の和:570891

約数の個数: 18

約数和(自身を含む): 51950262

約数和(自身を除く): 31398546

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 570881, 1141762, 1712643, 2283524, 3425286, 5137929, 6850572, 10275858, 20551716]

約数ペア:

[(1, 20551716), (2, 10275858), (3, 6850572), (4, 5137929), (6, 3425286), (9, 2283524), (12, 1712643), (18, 1141762), (36, 570881)]