20809468

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{223}}^1\times {\mathrm{569}}^1$

素因数の和:837

約数の個数: 24

約数和(自身を含む): 37537920

約数和(自身を除く): 16728452

約数列:

[1, 2, 4, 41, 82, 164, 223, 446, 569, 892, 1138, 2276, 9143, 18286, 23329, 36572, 46658, 93316, 126887, 253774, 507548, 5202367, 10404734, 20809468]

約数ペア:

[(1, 20809468), (2, 10404734), (4, 5202367), (41, 507548), (82, 253774), (164, 126887), (223, 93316), (446, 46658), (569, 36572), (892, 23329), (1138, 18286), (2276, 9143)]