128852780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{920377}}^1$

素因数の和:920393

約数の個数: 24

約数和(自身を含む): 309247008

約数和(自身を除く): 180394228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 920377, 1840754, 3681508, 4601885, 6442639, 9203770, 12885278, 18407540, 25770556, 32213195, 64426390, 128852780]

約数ペア:

[(1, 128852780), (2, 64426390), (4, 32213195), (5, 25770556), (7, 18407540), (10, 12885278), (14, 9203770), (20, 6442639), (28, 4601885), (35, 3681508), (70, 1840754), (140, 920377)]