21935721

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{257}}^1\times {\mathrm{1237}}^1$

素因数の和:1520

約数の個数: 16

約数和(自身を含む): 30662784

約数和(自身を除く): 8727063

約数列:

[1, 3, 23, 69, 257, 771, 1237, 3711, 5911, 17733, 28451, 85353, 317909, 953727, 7311907, 21935721]

約数ペア:

[(1, 21935721), (3, 7311907), (23, 953727), (69, 317909), (257, 85353), (771, 28451), (1237, 17733), (3711, 5911)]