64992220

素因数分解:

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

素因数の和:15621

約数の個数: 24

約数和(自身を含む): 137139408

約数和(自身を除く): 72147188

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 15401, 30802, 61604, 77005, 154010, 308020, 3249611, 6499222, 12998444, 16248055, 32496110, 64992220]

約数ペア:

[(1, 64992220), (2, 32496110), (4, 16248055), (5, 12998444), (10, 6499222), (20, 3249611), (211, 308020), (422, 154010), (844, 77005), (1055, 61604), (2110, 30802), (4220, 15401)]