209210981

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{643}}^1\times {\mathrm{877}}^1$

素因数の和:1580

約数の個数: 16

約数和(自身を含む): 244266624

約数和(自身を除く): 35055643

約数列:

[1, 7, 53, 371, 643, 877, 4501, 6139, 34079, 46481, 238553, 325367, 563911, 3947377, 29887283, 209210981]

約数ペア:

[(1, 209210981), (7, 29887283), (53, 3947377), (371, 563911), (643, 325367), (877, 238553), (4501, 46481), (6139, 34079)]