21009447

素因数分解:

$3^2\times {\mathrm{149}}^1\times {\mathrm{15667}}^1$

素因数の和:15822

約数の個数: 12

約数和(自身を含む): 30552600

約数和(自身を除く): 9543153

約数列:

[1, 3, 9, 149, 447, 1341, 15667, 47001, 141003, 2334383, 7003149, 21009447]

約数ペア:

[(1, 21009447), (3, 7003149), (9, 2334383), (149, 141003), (447, 47001), (1341, 15667)]