20903828

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{233}}^1\times {\mathrm{2039}}^1$

素因数の和:2287

約数の個数: 24

約数和(自身を含む): 40098240

約数和(自身を除く): 19194412

約数列:

[1, 2, 4, 11, 22, 44, 233, 466, 932, 2039, 2563, 4078, 5126, 8156, 10252, 22429, 44858, 89716, 475087, 950174, 1900348, 5225957, 10451914, 20903828]

約数ペア:

[(1, 20903828), (2, 10451914), (4, 5225957), (11, 1900348), (22, 950174), (44, 475087), (233, 89716), (466, 44858), (932, 22429), (2039, 10252), (2563, 8156), (4078, 5126)]