28404285

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{20809}}^1$

素因数の和:20837

約数の個数: 32

約数和(自身を含む): 55937280

約数和(自身を除く): 27532995

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 20809, 62427, 104045, 145663, 270517, 312135, 436989, 728315, 811551, 1352585, 1893619, 2184945, 4057755, 5680857, 9468095, 28404285]

約数ペア:

[(1, 28404285), (3, 9468095), (5, 5680857), (7, 4057755), (13, 2184945), (15, 1893619), (21, 1352585), (35, 811551), (39, 728315), (65, 436989), (91, 312135), (105, 270517), (195, 145663), (273, 104045), (455, 62427), (1365, 20809)]