21008108

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{20759}}^1$

素因数の和:20797

約数の個数: 24

約数和(自身を含む): 41852160

約数和(自身を除く): 20844052

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 253, 506, 1012, 20759, 41518, 83036, 228349, 456698, 477457, 913396, 954914, 1909828, 5252027, 10504054, 21008108]

約数ペア:

[(1, 21008108), (2, 10504054), (4, 5252027), (11, 1909828), (22, 954914), (23, 913396), (44, 477457), (46, 456698), (92, 228349), (253, 83036), (506, 41518), (1012, 20759)]