21021435

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27479}}^1$

素因数の和:27507

約数の個数: 24

約数和(自身を含む): 38581920

約数和(自身を除く): 17560485

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27479, 82437, 137395, 247311, 412185, 467143, 1236555, 1401429, 2335715, 4204287, 7007145, 21021435]

約数ペア:

[(1, 21021435), (3, 7007145), (5, 4204287), (9, 2335715), (15, 1401429), (17, 1236555), (45, 467143), (51, 412185), (85, 247311), (153, 137395), (255, 82437), (765, 27479)]