7789040

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{1987}}^1$

素因数の和:2014

約数の個数: 60

約数和(自身を含む): 21076776

約数和(自身を除く): 13287736

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 1987, 3920, 3974, 7948, 9935, 13909, 15896, 19870, 27818, 31792, 39740, 55636, 69545, 79480, 97363, 111272, 139090, 158960, 194726, 222544, 278180, 389452, 486815, 556360, 778904, 973630, 1112720, 1557808, 1947260, 3894520, 7789040]

約数ペア:

[(1, 7789040), (2, 3894520), (4, 1947260), (5, 1557808), (7, 1112720), (8, 973630), (10, 778904), (14, 556360), (16, 486815), (20, 389452), (28, 278180), (35, 222544), (40, 194726), (49, 158960), (56, 139090), (70, 111272), (80, 97363), (98, 79480), (112, 69545), (140, 55636), (196, 39740), (245, 31792), (280, 27818), (392, 19870), (490, 15896), (560, 13909), (784, 9935), (980, 7948), (1960, 3974), (1987, 3920)]