20809635

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{419}}^1$

素因数の和:488

約数の個数: 64

約数和(自身を含む): 42577920

約数和(自身を除く): 21768285

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 43, 55, 77, 105, 129, 165, 215, 231, 301, 385, 419, 473, 645, 903, 1155, 1257, 1419, 1505, 2095, 2365, 2933, 3311, 4515, 4609, 6285, 7095, 8799, 9933, 13827, 14665, 16555, 18017, 23045, 32263, 43995, 49665, 54051, 69135, 90085, 96789, 126119, 161315, 198187, 270255, 378357, 483945, 594561, 630595, 990935, 1387309, 1891785, 2972805, 4161927, 6936545, 20809635]

約数ペア:

[(1, 20809635), (3, 6936545), (5, 4161927), (7, 2972805), (11, 1891785), (15, 1387309), (21, 990935), (33, 630595), (35, 594561), (43, 483945), (55, 378357), (77, 270255), (105, 198187), (129, 161315), (165, 126119), (215, 96789), (231, 90085), (301, 69135), (385, 54051), (419, 49665), (473, 43995), (645, 32263), (903, 23045), (1155, 18017), (1257, 16555), (1419, 14665), (1505, 13827), (2095, 9933), (2365, 8799), (2933, 7095), (3311, 6285), (4515, 4609)]