21039285

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{82507}}^1$

素因数の和:82532

約数の個数: 16

約数和(自身を含む): 35643456

約数和(自身を除く): 14604171

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 82507, 247521, 412535, 1237605, 1402619, 4207857, 7013095, 21039285]

約数ペア:

[(1, 21039285), (3, 7013095), (5, 4207857), (15, 1402619), (17, 1237605), (51, 412535), (85, 247521), (255, 82507)]