1280385

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{769}}^1$

素因数の和:817

約数の個数: 24

約数和(自身を含む): 2282280

約数和(自身を除く): 1001895

約数列:

[1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 769, 1665, 2307, 3845, 6921, 11535, 28453, 34605, 85359, 142265, 256077, 426795, 1280385]

約数ペア:

[(1, 1280385), (3, 426795), (5, 256077), (9, 142265), (15, 85359), (37, 34605), (45, 28453), (111, 11535), (185, 6921), (333, 3845), (555, 2307), (769, 1665)]