19955612

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{181}}^1\times {\mathrm{641}}^1$

素因数の和:869

約数の個数: 24

約数和(自身を含む): 35987952

約数和(自身を除く): 16032340

約数列:

[1, 2, 4, 43, 86, 172, 181, 362, 641, 724, 1282, 2564, 7783, 15566, 27563, 31132, 55126, 110252, 116021, 232042, 464084, 4988903, 9977806, 19955612]

約数ペア:

[(1, 19955612), (2, 9977806), (4, 4988903), (43, 464084), (86, 232042), (172, 116021), (181, 110252), (362, 55126), (641, 31132), (724, 27563), (1282, 15566), (2564, 7783)]