128907128

素因数分解:

$2^3\times 7^1\times {\mathrm{353}}^1\times {\mathrm{6521}}^1$

素因数の和:6887

約数の個数: 32

約数和(自身を含む): 277054560

約数和(自身を除く): 148147432

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 353, 706, 1412, 2471, 2824, 4942, 6521, 9884, 13042, 19768, 26084, 45647, 52168, 91294, 182588, 365176, 2301913, 4603826, 9207652, 16113391, 18415304, 32226782, 64453564, 128907128]

約数ペア:

[(1, 128907128), (2, 64453564), (4, 32226782), (7, 18415304), (8, 16113391), (14, 9207652), (28, 4603826), (56, 2301913), (353, 365176), (706, 182588), (1412, 91294), (2471, 52168), (2824, 45647), (4942, 26084), (6521, 19768), (9884, 13042)]