20887559

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{4447}}^1$

素因数の和:4526

約数の個数: 16

約数和(自身を含む): 26474496

約数和(自身を除く): 5586937

約数列:

[1, 7, 11, 61, 77, 427, 671, 4447, 4697, 31129, 48917, 271267, 342419, 1898869, 2983937, 20887559]

約数ペア:

[(1, 20887559), (7, 2983937), (11, 1898869), (61, 342419), (77, 271267), (427, 48917), (671, 31129), (4447, 4697)]