21400085

素因数分解:

$5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{4463}}^1$

素因数の和:4612

約数の個数: 16

約数和(自身を含む): 29569536

約数和(自身を除く): 8169451

約数列:

[1, 5, 7, 35, 137, 685, 959, 4463, 4795, 22315, 31241, 156205, 611431, 3057155, 4280017, 21400085]

約数ペア:

[(1, 21400085), (5, 4280017), (7, 3057155), (35, 611431), (137, 156205), (685, 31241), (959, 22315), (4463, 4795)]