668836040

素因数分解:

$2^3\times 5^1\times {\mathrm{16720901}}^1$

素因数の和:16720912

約数の個数: 16

約数和(自身を含む): 1504881180

約数和(自身を除く): 836045140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 16720901, 33441802, 66883604, 83604505, 133767208, 167209010, 334418020, 668836040]

約数ペア:

[(1, 668836040), (2, 334418020), (4, 167209010), (5, 133767208), (8, 83604505), (10, 66883604), (20, 33441802), (40, 16720901)]