20871128

素因数分解:

$2^3\times {\mathrm{137}}^2\times {\mathrm{139}}^1$

素因数の和:419

約数の個数: 24

約数和(自身を含む): 39704700

約数和(自身を除く): 18833572

約数列:

[1, 2, 4, 8, 137, 139, 274, 278, 548, 556, 1096, 1112, 18769, 19043, 37538, 38086, 75076, 76172, 150152, 152344, 2608891, 5217782, 10435564, 20871128]

約数ペア:

[(1, 20871128), (2, 10435564), (4, 5217782), (8, 2608891), (137, 152344), (139, 150152), (274, 76172), (278, 75076), (548, 38086), (556, 37538), (1096, 19043), (1112, 18769)]