19559729

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{3919}}^1$

素因数の和:3980

約数の個数: 16

約数和(自身を含む): 24084480

約数和(自身を除く): 4524751

約数列:

[1, 7, 23, 31, 161, 217, 713, 3919, 4991, 27433, 90137, 121489, 630959, 850423, 2794247, 19559729]

約数ペア:

[(1, 19559729), (7, 2794247), (23, 850423), (31, 630959), (161, 121489), (217, 90137), (713, 27433), (3919, 4991)]