28480340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{203431}}^1$

素因数の和:203447

約数の個数: 24

約数和(自身を含む): 68353152

約数和(自身を除く): 39872812

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 203431, 406862, 813724, 1017155, 1424017, 2034310, 2848034, 4068620, 5696068, 7120085, 14240170, 28480340]

約数ペア:

[(1, 28480340), (2, 14240170), (4, 7120085), (5, 5696068), (7, 4068620), (10, 2848034), (14, 2034310), (20, 1424017), (28, 1017155), (35, 813724), (70, 406862), (140, 203431)]