21000918127

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{6917}}^1\times {\mathrm{4211}}^1$

素因数の和:11238

約数の個数: 16

約数和(自身を含む): 24243328512

約数和(自身を除く): 3242410385

約数列:

[1, 7, 103, 721, 4211, 6917, 29477, 48419, 433733, 712451, 3036131, 4987157, 29127487, 203892409, 3000131161, 21000918127]

約数ペア:

[(1, 21000918127), (7, 3000131161), (103, 203892409), (721, 29127487), (4211, 4987157), (6917, 3036131), (29477, 712451), (48419, 433733)]