168048140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{646339}}^1$

素因数の和:646361

約数の個数: 24

約数和(自身を含む): 380047920

約数和(自身を除く): 211999780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 646339, 1292678, 2585356, 3231695, 6463390, 8402407, 12926780, 16804814, 33609628, 42012035, 84024070, 168048140]

約数ペア:

[(1, 168048140), (2, 84024070), (4, 42012035), (5, 33609628), (10, 16804814), (13, 12926780), (20, 8402407), (26, 6463390), (52, 3231695), (65, 2585356), (130, 1292678), (260, 646339)]