21095307

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{33013}}^1$

素因数の和:33090

約数の個数: 12

約数和(自身を含む): 30901104

約数和(自身を除く): 9805797

約数列:

[1, 3, 9, 71, 213, 639, 33013, 99039, 297117, 2343923, 7031769, 21095307]

約数ペア:

[(1, 21095307), (3, 7031769), (9, 2343923), (71, 297117), (213, 99039), (639, 33013)]