28520475

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{22369}}^1$

素因数の和:22399

約数の個数: 24

約数和(自身を含む): 49929840

約数和(自身を除く): 21409365

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 22369, 67107, 111845, 335535, 380273, 559225, 1140819, 1677675, 1901365, 5704095, 9506825, 28520475]

約数ペア:

[(1, 28520475), (3, 9506825), (5, 5704095), (15, 1901365), (17, 1677675), (25, 1140819), (51, 559225), (75, 380273), (85, 335535), (255, 111845), (425, 67107), (1275, 22369)]