2561982.00000000

素因数分解:

$2^2\times {\mathrm{109}}^1\times {\mathrm{66403}}^1$

素因数の和:66516

約数の個数: 12

約数和(自身を含む): 51131080

約数和(自身を除く): 22179372

約数列:

[1, 2, 4, 109, 218, 436, 66403, 132806, 265612, 7237927, 14475854, 28951708]

約数ペア:

[(1, 28951708), (2, 14475854), (4, 7237927), (109, 265612), (218, 132806), (436, 66403)]