21021896

素因数分解:

$2^3\times 7^1\times {\mathrm{375391}}^1$

素因数の和:375404

約数の個数: 16

約数和(自身を含む): 45047040

約数和(自身を除く): 24025144

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 375391, 750782, 1501564, 2627737, 3003128, 5255474, 10510948, 21021896]

約数ペア:

[(1, 21021896), (2, 10510948), (4, 5255474), (7, 3003128), (8, 2627737), (14, 1501564), (28, 750782), (56, 375391)]