28278670

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{403981}}^1$

素因数の和:403995

約数の個数: 16

約数和(自身を含む): 58173408

約数和(自身を除く): 29894738

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 403981, 807962, 2019905, 2827867, 4039810, 5655734, 14139335, 28278670]

約数ペア:

[(1, 28278670), (2, 14139335), (5, 5655734), (7, 4039810), (10, 2827867), (14, 2019905), (35, 807962), (70, 403981)]