20797315

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{7717}}^1$

素因数の和:7747

約数の個数: 24

約数和(自身を含む): 31674672

約数和(自身を除く): 10877357

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 385, 539, 2695, 7717, 38585, 54019, 84887, 270095, 378133, 424435, 594209, 1890665, 2971045, 4159463, 20797315]

約数ペア:

[(1, 20797315), (5, 4159463), (7, 2971045), (11, 1890665), (35, 594209), (49, 424435), (55, 378133), (77, 270095), (245, 84887), (385, 54019), (539, 38585), (2695, 7717)]