18996820948

素因数分解:

$2^2\times 7^1\times {\mathrm{678457891}}^1$

素因数の和:678457902

約数の個数: 12

約数和(自身を含む): 37993641952

約数和(自身を除く): 18996821004

約数列:

[1, 2, 4, 7, 14, 28, 678457891, 1356915782, 2713831564, 4749205237, 9498410474, 18996820948]

約数ペア:

[(1, 18996820948), (2, 9498410474), (4, 4749205237), (7, 2713831564), (14, 1356915782), (28, 678457891)]