20418958

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2647}}^1$

素因数の和:2704

約数の個数: 32

約数和(自身を含む): 38131200

約数和(自身を除く): 17712242

約数列:

[1, 2, 7, 14, 19, 29, 38, 58, 133, 203, 266, 406, 551, 1102, 2647, 3857, 5294, 7714, 18529, 37058, 50293, 76763, 100586, 153526, 352051, 537341, 704102, 1074682, 1458497, 2916994, 10209479, 20418958]

約数ペア:

[(1, 20418958), (2, 10209479), (7, 2916994), (14, 1458497), (19, 1074682), (29, 704102), (38, 537341), (58, 352051), (133, 153526), (203, 100586), (266, 76763), (406, 50293), (551, 37058), (1102, 18529), (2647, 7714), (3857, 5294)]