668889221

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{668221}}^1$

素因数の和:668252

約数の個数: 16

約数和(自身を含む): 898090368

約数和(自身を除く): 229201147

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 668221, 4677547, 7350431, 8686873, 51453017, 60808111, 95555603, 668889221]

約数ペア:

[(1, 668889221), (7, 95555603), (11, 60808111), (13, 51453017), (77, 8686873), (91, 7350431), (143, 4677547), (1001, 668221)]