311080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1$

素因数の和:130

約数の個数: 64

約数和(自身を含む): 881280

約数和(自身を除く): 570200

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 101, 110, 140, 154, 202, 220, 280, 308, 385, 404, 440, 505, 616, 707, 770, 808, 1010, 1111, 1414, 1540, 2020, 2222, 2828, 3080, 3535, 4040, 4444, 5555, 5656, 7070, 7777, 8888, 11110, 14140, 15554, 22220, 28280, 31108, 38885, 44440, 62216, 77770, 155540, 311080]

約数ペア:

[(1, 311080), (2, 155540), (4, 77770), (5, 62216), (7, 44440), (8, 38885), (10, 31108), (11, 28280), (14, 22220), (20, 15554), (22, 14140), (28, 11110), (35, 8888), (40, 7777), (44, 7070), (55, 5656), (56, 5555), (70, 4444), (77, 4040), (88, 3535), (101, 3080), (110, 2828), (140, 2222), (154, 2020), (202, 1540), (220, 1414), (280, 1111), (308, 1010), (385, 808), (404, 770), (440, 707), (505, 616)]