28386421

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{509}}^1$

素因数の和:804

約数の個数: 16

約数和(自身を含む): 33684480

約数和(自身を除く): 5298059

約数列:

[1, 7, 31, 217, 257, 509, 1799, 3563, 7967, 15779, 55769, 110453, 130813, 915691, 4055203, 28386421]

約数ペア:

[(1, 28386421), (7, 4055203), (31, 915691), (217, 130813), (257, 110453), (509, 55769), (1799, 15779), (3563, 7967)]