2781800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{1987}}^1$

素因数の和:2010

約数の個数: 48

約数和(自身を含む): 7395360

約数和(自身を除く): 4613560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 140, 175, 200, 280, 350, 700, 1400, 1987, 3974, 7948, 9935, 13909, 15896, 19870, 27818, 39740, 49675, 55636, 69545, 79480, 99350, 111272, 139090, 198700, 278180, 347725, 397400, 556360, 695450, 1390900, 2781800]

約数ペア:

[(1, 2781800), (2, 1390900), (4, 695450), (5, 556360), (7, 397400), (8, 347725), (10, 278180), (14, 198700), (20, 139090), (25, 111272), (28, 99350), (35, 79480), (40, 69545), (50, 55636), (56, 49675), (70, 39740), (100, 27818), (140, 19870), (175, 15896), (200, 13909), (280, 9935), (350, 7948), (700, 3974), (1400, 1987)]