256278540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{610187}}^1$

素因数の和:610206

約数の個数: 48

約数和(自身を含む): 820092672

約数和(自身を除く): 563814132

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 610187, 1220374, 1830561, 2440748, 3050935, 3661122, 4271309, 6101870, 7322244, 8542618, 9152805, 12203740, 12813927, 17085236, 18305610, 21356545, 25627854, 36611220, 42713090, 51255708, 64069635, 85426180, 128139270, 256278540]

約数ペア:

[(1, 256278540), (2, 128139270), (3, 85426180), (4, 64069635), (5, 51255708), (6, 42713090), (7, 36611220), (10, 25627854), (12, 21356545), (14, 18305610), (15, 17085236), (20, 12813927), (21, 12203740), (28, 9152805), (30, 8542618), (35, 7322244), (42, 6101870), (60, 4271309), (70, 3661122), (84, 3050935), (105, 2440748), (140, 1830561), (210, 1220374), (420, 610187)]