21704019

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{18503}}^1$

素因数の和:18546

約数の個数: 16

約数和(自身を含む): 31974912

約数和(自身を除く): 10270893

約数列:

[1, 3, 17, 23, 51, 69, 391, 1173, 18503, 55509, 314551, 425569, 943653, 1276707, 7234673, 21704019]

約数ペア:

[(1, 21704019), (3, 7234673), (17, 1276707), (23, 943653), (51, 425569), (69, 314551), (391, 55509), (1173, 18503)]