20518412

素因数分解:

$2^2\times {\mathrm{179}}^1\times {\mathrm{28657}}^1$

素因数の和:28840

約数の個数: 12

約数和(自身を含む): 36109080

約数和(自身を除く): 15590668

約数列:

[1, 2, 4, 179, 358, 716, 28657, 57314, 114628, 5129603, 10259206, 20518412]

約数ペア:

[(1, 20518412), (2, 10259206), (4, 5129603), (179, 114628), (358, 57314), (716, 28657)]