208520739

素因数分解:

$3^2\times 7^1\times {\mathrm{677}}^1\times {\mathrm{4889}}^1$

素因数の和:5579

約数の個数: 24

約数和(自身を含む): 344803680

約数和(自身を除く): 136282941

約数列:

[1, 3, 7, 9, 21, 63, 677, 2031, 4739, 4889, 6093, 14217, 14667, 34223, 42651, 44001, 102669, 308007, 3309853, 9929559, 23168971, 29788677, 69506913, 208520739]

約数ペア:

[(1, 208520739), (3, 69506913), (7, 29788677), (9, 23168971), (21, 9929559), (63, 3309853), (677, 308007), (2031, 102669), (4739, 44001), (4889, 42651), (6093, 34223), (14217, 14667)]