21740047

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{733}}^1$

素因数の和:982

約数の個数: 16

約数和(自身を含む): 26306560

約数和(自身を除く): 4566513

約数列:

[1, 7, 19, 133, 223, 733, 1561, 4237, 5131, 13927, 29659, 97489, 163459, 1144213, 3105721, 21740047]

約数ペア:

[(1, 21740047), (7, 3105721), (19, 1144213), (133, 163459), (223, 97489), (733, 29659), (1561, 13927), (4237, 5131)]