221867009

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{128321}}^1$

素因数の和:128360

約数の個数: 16

約数和(自身を含む): 287441280

約数和(自身を除く): 65574271

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 128321, 898247, 1668173, 2438099, 11677211, 17066693, 31695287, 221867009]

約数ペア:

[(1, 221867009), (7, 31695287), (13, 17066693), (19, 11677211), (91, 2438099), (133, 1668173), (247, 898247), (1729, 128321)]