20856913

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{4591}}^1$

素因数の和:4668

約数の個数: 16

約数和(自身を含む): 26449920

約数和(自身を除く): 5593007

約数列:

[1, 7, 11, 59, 77, 413, 649, 4543, 4591, 32137, 50501, 270869, 353507, 1896083, 2979559, 20856913]

約数ペア:

[(1, 20856913), (7, 2979559), (11, 1896083), (59, 353507), (77, 270869), (413, 50501), (649, 32137), (4543, 4591)]