208519263

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{5303}}^1$

素因数の和:5583

約数の個数: 24

約数和(自身を含む): 320213088

約数和(自身を除く): 111693825

約数列:

[1, 3, 9, 17, 51, 153, 257, 771, 2313, 4369, 5303, 13107, 15909, 39321, 47727, 90151, 270453, 811359, 1362871, 4088613, 12265839, 23168807, 69506421, 208519263]

約数ペア:

[(1, 208519263), (3, 69506421), (9, 23168807), (17, 12265839), (51, 4088613), (153, 1362871), (257, 811359), (771, 270453), (2313, 90151), (4369, 47727), (5303, 39321), (13107, 15909)]