19817564

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{1709}}^1$

素因数の和:1949

約数の個数: 24

約数和(自身を含む): 37537920

約数和(自身を除く): 17720356

約数列:

[1, 2, 4, 13, 26, 52, 223, 446, 892, 1709, 2899, 3418, 5798, 6836, 11596, 22217, 44434, 88868, 381107, 762214, 1524428, 4954391, 9908782, 19817564]

約数ペア:

[(1, 19817564), (2, 9908782), (4, 4954391), (13, 1524428), (26, 762214), (52, 381107), (223, 88868), (446, 44434), (892, 22217), (1709, 11596), (2899, 6836), (3418, 5798)]