18987710

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{271253}}^1$

素因数の和:271267

約数の個数: 16

約数和(自身を含む): 39060576

約数和(自身を除く): 20072866

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 271253, 542506, 1356265, 1898771, 2712530, 3797542, 9493855, 18987710]

約数ペア:

[(1, 18987710), (2, 9493855), (5, 3797542), (7, 2712530), (10, 1898771), (14, 1356265), (35, 542506), (70, 271253)]