209432816

素因数分解:

$2^4\times {\mathrm{643}}^1\times {\mathrm{20357}}^1$

素因数の和:21008

約数の個数: 20

約数和(自身を含む): 406427112

約数和(自身を除く): 196994296

約数列:

[1, 2, 4, 8, 16, 643, 1286, 2572, 5144, 10288, 20357, 40714, 81428, 162856, 325712, 13089551, 26179102, 52358204, 104716408, 209432816]

約数ペア:

[(1, 209432816), (2, 104716408), (4, 52358204), (8, 26179102), (16, 13089551), (643, 325712), (1286, 162856), (2572, 81428), (5144, 40714), (10288, 20357)]