27778513

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{331}}^1\times {\mathrm{631}}^1$

素因数の和:988

約数の個数: 16

約数和(自身を含む): 33571840

約数和(自身を除く): 5793327

約数列:

[1, 7, 19, 133, 331, 631, 2317, 4417, 6289, 11989, 44023, 83923, 208861, 1462027, 3968359, 27778513]

約数ペア:

[(1, 27778513), (7, 3968359), (19, 1462027), (133, 208861), (331, 83923), (631, 44023), (2317, 11989), (4417, 6289)]