25025560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{643}}^1$

素因数の和:800

約数の個数: 64

約数和(自身を含む): 64915200

約数和(自身を除く): 39889640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 556, 643, 695, 973, 1112, 1286, 1390, 1946, 2572, 2780, 3215, 3892, 4501, 4865, 5144, 5560, 6430, 7784, 9002, 9730, 12860, 18004, 19460, 22505, 25720, 36008, 38920, 45010, 89377, 90020, 178754, 180040, 357508, 446885, 625639, 715016, 893770, 1251278, 1787540, 2502556, 3128195, 3575080, 5005112, 6256390, 12512780, 25025560]

約数ペア:

[(1, 25025560), (2, 12512780), (4, 6256390), (5, 5005112), (7, 3575080), (8, 3128195), (10, 2502556), (14, 1787540), (20, 1251278), (28, 893770), (35, 715016), (40, 625639), (56, 446885), (70, 357508), (139, 180040), (140, 178754), (278, 90020), (280, 89377), (556, 45010), (643, 38920), (695, 36008), (973, 25720), (1112, 22505), (1286, 19460), (1390, 18004), (1946, 12860), (2572, 9730), (2780, 9002), (3215, 7784), (3892, 6430), (4501, 5560), (4865, 5144)]