21075003

素因数分解:

$3^2\times {\mathrm{727}}^1\times {\mathrm{3221}}^1$

素因数の和:3954

約数の個数: 12

約数和(自身を含む): 30493008

約数和(自身を除く): 9418005

約数列:

[1, 3, 9, 727, 2181, 3221, 6543, 9663, 28989, 2341667, 7025001, 21075003]

約数ペア:

[(1, 21075003), (3, 7025001), (9, 2341667), (727, 28989), (2181, 9663), (3221, 6543)]