129984440

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{15401}}^1$

素因数の和:15623

約数の個数: 32

約数和(自身を含む): 293870160

約数和(自身を除く): 163885720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8440, 15401, 30802, 61604, 77005, 123208, 154010, 308020, 616040, 3249611, 6499222, 12998444, 16248055, 25996888, 32496110, 64992220, 129984440]

約数ペア:

[(1, 129984440), (2, 64992220), (4, 32496110), (5, 25996888), (8, 16248055), (10, 12998444), (20, 6499222), (40, 3249611), (211, 616040), (422, 308020), (844, 154010), (1055, 123208), (1688, 77005), (2110, 61604), (4220, 30802), (8440, 15401)]