80521456

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{117037}}^1$

素因数の和:117088

約数の個数: 20

約数和(自身を含む): 159639832

約数和(自身を除く): 79118376

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 117037, 234074, 468148, 936296, 1872592, 5032591, 10065182, 20130364, 40260728, 80521456]

約数ペア:

[(1, 80521456), (2, 40260728), (4, 20130364), (8, 10065182), (16, 5032591), (43, 1872592), (86, 936296), (172, 468148), (344, 234074), (688, 117037)]