278876360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{995987}}^1$

素因数の和:996005

約数の個数: 32

約数和(自身を含む): 717111360

約数和(自身を除く): 438235000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 995987, 1991974, 3983948, 4979935, 6971909, 7967896, 9959870, 13943818, 19919740, 27887636, 34859545, 39839480, 55775272, 69719090, 139438180, 278876360]

約数ペア:

[(1, 278876360), (2, 139438180), (4, 69719090), (5, 55775272), (7, 39839480), (8, 34859545), (10, 27887636), (14, 19919740), (20, 13943818), (28, 9959870), (35, 7967896), (40, 6971909), (56, 4979935), (70, 3983948), (140, 1991974), (280, 995987)]