18920464

素因数分解:

$2^4\times {\mathrm{661}}^1\times {\mathrm{1789}}^1$

素因数の和:2458

約数の個数: 20

約数和(自身を含む): 36734380

約数和(自身を除く): 17813916

約数列:

[1, 2, 4, 8, 16, 661, 1322, 1789, 2644, 3578, 5288, 7156, 10576, 14312, 28624, 1182529, 2365058, 4730116, 9460232, 18920464]

約数ペア:

[(1, 18920464), (2, 9460232), (4, 4730116), (8, 2365058), (16, 1182529), (661, 28624), (1322, 14312), (1789, 10576), (2644, 7156), (3578, 5288)]