18817988

素因数分解:

$2^2\times 7^1\times {\mathrm{311}}^1\times {\mathrm{2161}}^1$

素因数の和:2483

約数の個数: 24

約数和(自身を含む): 37774464

約数和(自身を除く): 18956476

約数列:

[1, 2, 4, 7, 14, 28, 311, 622, 1244, 2161, 2177, 4322, 4354, 8644, 8708, 15127, 30254, 60508, 672071, 1344142, 2688284, 4704497, 9408994, 18817988]

約数ペア:

[(1, 18817988), (2, 9408994), (4, 4704497), (7, 2688284), (14, 1344142), (28, 672071), (311, 60508), (622, 30254), (1244, 15127), (2161, 8708), (2177, 8644), (4322, 4354)]