25257640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{15401}}^1$

素因数の和:15453

約数の個数: 32

約数和(自身を含む): 58219560

約数和(自身を除く): 32961920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 15401, 30802, 61604, 77005, 123208, 154010, 308020, 616040, 631441, 1262882, 2525764, 3157205, 5051528, 6314410, 12628820, 25257640]

約数ペア:

[(1, 25257640), (2, 12628820), (4, 6314410), (5, 5051528), (8, 3157205), (10, 2525764), (20, 1262882), (40, 631441), (41, 616040), (82, 308020), (164, 154010), (205, 123208), (328, 77005), (410, 61604), (820, 30802), (1640, 15401)]