19966436

素因数分解:

$2^2\times 7^1\times {\mathrm{643}}^1\times {\mathrm{1109}}^1$

素因数の和:1763

約数の個数: 24

約数和(自身を含む): 40031040

約数和(自身を除く): 20064604

約数列:

[1, 2, 4, 7, 14, 28, 643, 1109, 1286, 2218, 2572, 4436, 4501, 7763, 9002, 15526, 18004, 31052, 713087, 1426174, 2852348, 4991609, 9983218, 19966436]

約数ペア:

[(1, 19966436), (2, 9983218), (4, 4991609), (7, 2852348), (14, 1426174), (28, 713087), (643, 31052), (1109, 18004), (1286, 15526), (2218, 9002), (2572, 7763), (4436, 4501)]