20255080

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3643}}^1$

素因数の和:3793

約数の個数: 32

約数和(自身を含む): 45914400

約数和(自身を除く): 25659320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3643, 5560, 7286, 14572, 18215, 29144, 36430, 72860, 145720, 506377, 1012754, 2025508, 2531885, 4051016, 5063770, 10127540, 20255080]

約数ペア:

[(1, 20255080), (2, 10127540), (4, 5063770), (5, 4051016), (8, 2531885), (10, 2025508), (20, 1012754), (40, 506377), (139, 145720), (278, 72860), (556, 36430), (695, 29144), (1112, 18215), (1390, 14572), (2780, 7286), (3643, 5560)]