19918213

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{4831}}^1$

素因数の和:4888

約数の個数: 16

約数和(自身を含む): 24739840

約数和(自身を除く): 4821627

約数列:

[1, 7, 19, 31, 133, 217, 589, 4123, 4831, 33817, 91789, 149761, 642523, 1048327, 2845459, 19918213]

約数ペア:

[(1, 19918213), (7, 2845459), (19, 1048327), (31, 642523), (133, 149761), (217, 91789), (589, 33817), (4123, 4831)]