20989852

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{449}}^1$

素因数の和:526

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 21346148

約数列:

[1, 2, 4, 13, 26, 29, 31, 52, 58, 62, 116, 124, 377, 403, 449, 754, 806, 898, 899, 1508, 1612, 1796, 1798, 3596, 5837, 11674, 11687, 13021, 13919, 23348, 23374, 26042, 27838, 46748, 52084, 55676, 169273, 180947, 338546, 361894, 403651, 677092, 723788, 807302, 1614604, 5247463, 10494926, 20989852]

約数ペア:

[(1, 20989852), (2, 10494926), (4, 5247463), (13, 1614604), (26, 807302), (29, 723788), (31, 677092), (52, 403651), (58, 361894), (62, 338546), (116, 180947), (124, 169273), (377, 55676), (403, 52084), (449, 46748), (754, 27838), (806, 26042), (898, 23374), (899, 23348), (1508, 13919), (1612, 13021), (1796, 11687), (1798, 11674), (3596, 5837)]