1813780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{3943}}^1$

素因数の和:3975

約数の個数: 24

約数和(自身を含む): 3975552

約数和(自身を除く): 2161772

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 3943, 7886, 15772, 19715, 39430, 78860, 90689, 181378, 362756, 453445, 906890, 1813780]

約数ペア:

[(1, 1813780), (2, 906890), (4, 453445), (5, 362756), (10, 181378), (20, 90689), (23, 78860), (46, 39430), (92, 19715), (115, 15772), (230, 7886), (460, 3943)]