28378490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{405407}}^1$

素因数の和:405421

約数の個数: 16

約数和(自身を含む): 58378752

約数和(自身を除く): 30000262

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 405407, 810814, 2027035, 2837849, 4054070, 5675698, 14189245, 28378490]

約数ペア:

[(1, 28378490), (2, 14189245), (5, 5675698), (7, 4054070), (10, 2837849), (14, 2027035), (35, 810814), (70, 405407)]