27988317

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{12007}}^1$

素因数の和:12057

約数の個数: 24

約数和(自身を含む): 47455616

約数和(自身を除く): 19467299

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 12007, 36021, 84049, 108063, 252147, 444259, 756441, 1332777, 3109813, 3998331, 9329439, 27988317]

約数ペア:

[(1, 27988317), (3, 9329439), (7, 3998331), (9, 3109813), (21, 1332777), (37, 756441), (63, 444259), (111, 252147), (259, 108063), (333, 84049), (777, 36021), (2331, 12007)]