21704787

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{61837}}^1$

素因数の和:61859

約数の個数: 16

約数和(自身を含む): 34629280

約数和(自身を除く): 12924493

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 61837, 185511, 556533, 803881, 1669599, 2411643, 7234929, 21704787]

約数ペア:

[(1, 21704787), (3, 7234929), (9, 2411643), (13, 1669599), (27, 803881), (39, 556533), (117, 185511), (351, 61837)]