28131125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{499}}^1$

素因数の和:566

約数の個数: 32

約数和(自身を含む): 39312000

約数和(自身を除く): 11180875

約数列:

[1, 5, 11, 25, 41, 55, 125, 205, 275, 451, 499, 1025, 1375, 2255, 2495, 5125, 5489, 11275, 12475, 20459, 27445, 56375, 62375, 102295, 137225, 225049, 511475, 686125, 1125245, 2557375, 5626225, 28131125]

約数ペア:

[(1, 28131125), (5, 5626225), (11, 2557375), (25, 1125245), (41, 686125), (55, 511475), (125, 225049), (205, 137225), (275, 102295), (451, 62375), (499, 56375), (1025, 27445), (1375, 20459), (2255, 12475), (2495, 11275), (5125, 5489)]