128686817

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{7333}}^1$

素因数の和:7472

約数の個数: 16

約数和(自身を含む): 154894080

約数和(自身を除く): 26207263

約数列:

[1, 7, 23, 109, 161, 763, 2507, 7333, 17549, 51331, 168659, 799297, 1180613, 5595079, 18383831, 128686817]

約数ペア:

[(1, 128686817), (7, 18383831), (23, 5595079), (109, 1180613), (161, 799297), (763, 168659), (2507, 51331), (7333, 17549)]