1678940

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{661}}^1$

素因数の和:797

約数の個数: 24

約数和(自身を含む): 3558912

約数和(自身を除く): 1879972

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 661, 1270, 1322, 2540, 2644, 3305, 6610, 13220, 83947, 167894, 335788, 419735, 839470, 1678940]

約数ペア:

[(1, 1678940), (2, 839470), (4, 419735), (5, 335788), (10, 167894), (20, 83947), (127, 13220), (254, 6610), (508, 3305), (635, 2644), (661, 2540), (1270, 1322)]