21426884

素因数分解:

$2^2\times {\mathrm{103}}^1\times {\mathrm{131}}^1\times {\mathrm{397}}^1$

素因数の和:635

約数の個数: 24

約数和(自身を含む): 38246208

約数和(自身を除く): 16819324

約数列:

[1, 2, 4, 103, 131, 206, 262, 397, 412, 524, 794, 1588, 13493, 26986, 40891, 52007, 53972, 81782, 104014, 163564, 208028, 5356721, 10713442, 21426884]

約数ペア:

[(1, 21426884), (2, 10713442), (4, 5356721), (103, 208028), (131, 163564), (206, 104014), (262, 81782), (397, 53972), (412, 52007), (524, 40891), (794, 26986), (1588, 13493)]