28767820

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{2237}}^1$

素因数の和:2889

約数の個数: 24

約数和(自身を含む): 60533424

約数和(自身を除く): 31765604

約数列:

[1, 2, 4, 5, 10, 20, 643, 1286, 2237, 2572, 3215, 4474, 6430, 8948, 11185, 12860, 22370, 44740, 1438391, 2876782, 5753564, 7191955, 14383910, 28767820]

約数ペア:

[(1, 28767820), (2, 14383910), (4, 7191955), (5, 5753564), (10, 2876782), (20, 1438391), (643, 44740), (1286, 22370), (2237, 12860), (2572, 11185), (3215, 8948), (4474, 6430)]