858140

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{401}}^1$

素因数の和:517

約数の個数: 24

約数和(自身を含む): 1823472

約数和(自身を除く): 965332

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 401, 428, 535, 802, 1070, 1604, 2005, 2140, 4010, 8020, 42907, 85814, 171628, 214535, 429070, 858140]

約数ペア:

[(1, 858140), (2, 429070), (4, 214535), (5, 171628), (10, 85814), (20, 42907), (107, 8020), (214, 4010), (401, 2140), (428, 2005), (535, 1604), (802, 1070)]