20871211

素因数分解:

${\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:286

約数の個数: 16

約数和(自身を含む): 22205920

約数和(自身を除く): 1334709

約数列:

[1, 43, 61, 73, 109, 2623, 3139, 4453, 4687, 6649, 7957, 191479, 285907, 342151, 485377, 20871211]

約数ペア:

[(1, 20871211), (43, 485377), (61, 342151), (73, 285907), (109, 191479), (2623, 7957), (3139, 6649), (4453, 4687)]