640716

素因数分解:

$2^2\times 3^1\times {\mathrm{107}}^1\times {\mathrm{499}}^1$

素因数の和:613

約数の個数: 24

約数和(自身を含む): 1512000

約数和(自身を除く): 871284

約数列:

[1, 2, 3, 4, 6, 12, 107, 214, 321, 428, 499, 642, 998, 1284, 1497, 1996, 2994, 5988, 53393, 106786, 160179, 213572, 320358, 640716]

約数ペア:

[(1, 640716), (2, 320358), (3, 213572), (4, 160179), (6, 106786), (12, 53393), (107, 5988), (214, 2994), (321, 1996), (428, 1497), (499, 1284), (642, 998)]