257407080

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{306437}}^1$

素因数の和:306458

約数の個数: 64

約数和(自身を含む): 882541440

約数和(自身を除く): 625134360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 306437, 612874, 919311, 1225748, 1532185, 1838622, 2145059, 2451496, 3064370, 3677244, 4290118, 4596555, 6128740, 6435177, 7354488, 8580236, 9193110, 10725295, 12257480, 12870354, 17160472, 18386220, 21450590, 25740708, 32175885, 36772440, 42901180, 51481416, 64351770, 85802360, 128703540, 257407080]

約数ペア:

[(1, 257407080), (2, 128703540), (3, 85802360), (4, 64351770), (5, 51481416), (6, 42901180), (7, 36772440), (8, 32175885), (10, 25740708), (12, 21450590), (14, 18386220), (15, 17160472), (20, 12870354), (21, 12257480), (24, 10725295), (28, 9193110), (30, 8580236), (35, 7354488), (40, 6435177), (42, 6128740), (56, 4596555), (60, 4290118), (70, 3677244), (84, 3064370), (105, 2451496), (120, 2145059), (140, 1838622), (168, 1532185), (210, 1225748), (280, 919311), (420, 612874), (840, 306437)]