21125819

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{613}}^1$

素因数の和:878

約数の個数: 16

約数和(自身を含む): 24962784

約数和(自身を除く): 3836965

約数列:

[1, 11, 13, 143, 241, 613, 2651, 3133, 6743, 7969, 34463, 87659, 147733, 1625063, 1920529, 21125819]

約数ペア:

[(1, 21125819), (11, 1920529), (13, 1625063), (143, 147733), (241, 87659), (613, 34463), (2651, 7969), (3133, 6743)]