20997053

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{701}}^1$

素因数の和:1108

約数の個数: 16

約数和(自身を含む): 26282880

約数和(自身を除く): 5285827

約数列:

[1, 7, 11, 77, 389, 701, 2723, 4279, 4907, 7711, 29953, 53977, 272689, 1908823, 2999579, 20997053]

約数ペア:

[(1, 20997053), (7, 2999579), (11, 1908823), (77, 272689), (389, 53977), (701, 29953), (2723, 7711), (4279, 4907)]