28809475

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1279}}^1$

素因数の和:1359

約数の個数: 24

約数和(自身を含む): 38568960

約数和(自身を除く): 9759485

約数列:

[1, 5, 17, 25, 53, 85, 265, 425, 901, 1279, 1325, 4505, 6395, 21743, 22525, 31975, 67787, 108715, 338935, 543575, 1152379, 1694675, 5761895, 28809475]

約数ペア:

[(1, 28809475), (5, 5761895), (17, 1694675), (25, 1152379), (53, 543575), (85, 338935), (265, 108715), (425, 67787), (901, 31975), (1279, 22525), (1325, 21743), (4505, 6395)]