8427340

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1997}}^1$

素因数の和:2217

約数の個数: 24

約数和(自身を含む): 17790192

約数和(自身を除く): 9362852

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 1997, 2110, 3994, 4220, 7988, 9985, 19970, 39940, 421367, 842734, 1685468, 2106835, 4213670, 8427340]

約数ペア:

[(1, 8427340), (2, 4213670), (4, 2106835), (5, 1685468), (10, 842734), (20, 421367), (211, 39940), (422, 19970), (844, 9985), (1055, 7988), (1997, 4220), (2110, 3994)]