28096180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1987}}^1$

素因数の和:2104

約数の個数: 48

約数和(自身を含む): 68132736

約数和(自身を除く): 40036556

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 101, 140, 202, 404, 505, 707, 1010, 1414, 1987, 2020, 2828, 3535, 3974, 7070, 7948, 9935, 13909, 14140, 19870, 27818, 39740, 55636, 69545, 139090, 200687, 278180, 401374, 802748, 1003435, 1404809, 2006870, 2809618, 4013740, 5619236, 7024045, 14048090, 28096180]

約数ペア:

[(1, 28096180), (2, 14048090), (4, 7024045), (5, 5619236), (7, 4013740), (10, 2809618), (14, 2006870), (20, 1404809), (28, 1003435), (35, 802748), (70, 401374), (101, 278180), (140, 200687), (202, 139090), (404, 69545), (505, 55636), (707, 39740), (1010, 27818), (1414, 19870), (1987, 14140), (2020, 13909), (2828, 9935), (3535, 7948), (3974, 7070)]