28281705

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1\times {\mathrm{263}}^1$

素因数の和:445

約数の個数: 32

約数和(自身を含む): 46531584

約数和(自身を除く): 18249879

約数列:

[1, 3, 5, 15, 67, 107, 201, 263, 321, 335, 535, 789, 1005, 1315, 1605, 3945, 7169, 17621, 21507, 28141, 35845, 52863, 84423, 88105, 107535, 140705, 264315, 422115, 1885447, 5656341, 9427235, 28281705]

約数ペア:

[(1, 28281705), (3, 9427235), (5, 5656341), (15, 1885447), (67, 422115), (107, 264315), (201, 140705), (263, 107535), (321, 88105), (335, 84423), (535, 52863), (789, 35845), (1005, 28141), (1315, 21507), (1605, 17621), (3945, 7169)]