28209727

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{5849}}^1$

素因数の和:5922

約数の個数: 16

約数和(自身を含む): 35380800

約数和(自身を除く): 7171073

約数列:

[1, 7, 13, 53, 91, 371, 689, 4823, 5849, 40943, 76037, 309997, 532259, 2169979, 4029961, 28209727]

約数ペア:

[(1, 28209727), (7, 4029961), (13, 2169979), (53, 532259), (91, 309997), (371, 76037), (689, 40943), (4823, 5849)]