128658256

素因数分解:

$2^4\times {\mathrm{449}}^1\times {\mathrm{17909}}^1$

素因数の和:18366

約数の個数: 20

約数和(自身を含む): 249844500

約数和(自身を除く): 121186244

約数列:

[1, 2, 4, 8, 16, 449, 898, 1796, 3592, 7184, 17909, 35818, 71636, 143272, 286544, 8041141, 16082282, 32164564, 64329128, 128658256]

約数ペア:

[(1, 128658256), (2, 64329128), (4, 32164564), (8, 16082282), (16, 8041141), (449, 286544), (898, 143272), (1796, 71636), (3592, 35818), (7184, 17909)]