20871823

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{1129}}^1$

素因数の和:1294

約数の個数: 16

約数和(自身を含む): 25312000

約数和(自身を除く): 4440177

約数列:

[1, 7, 19, 133, 139, 973, 1129, 2641, 7903, 18487, 21451, 150157, 156931, 1098517, 2981689, 20871823]

約数ペア:

[(1, 20871823), (7, 2981689), (19, 1098517), (133, 156931), (139, 150157), (973, 21451), (1129, 18487), (2641, 7903)]