21005798

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{4999}}^1$

素因数の和:5203

約数の個数: 16

約数和(自身を含む): 34560000

約数和(自身を除く): 13554202

約数列:

[1, 2, 11, 22, 191, 382, 2101, 4202, 4999, 9998, 54989, 109978, 954809, 1909618, 10502899, 21005798]

約数ペア:

[(1, 21005798), (2, 10502899), (11, 1909618), (22, 954809), (191, 109978), (382, 54989), (2101, 9998), (4202, 4999)]