20353180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2819}}^1$

素因数の和:2866

約数の個数: 36

約数和(自身を含む): 45125640

約数和(自身を除く): 24772460

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 2819, 3610, 5638, 7220, 11276, 14095, 28190, 53561, 56380, 107122, 214244, 267805, 535610, 1017659, 1071220, 2035318, 4070636, 5088295, 10176590, 20353180]

約数ペア:

[(1, 20353180), (2, 10176590), (4, 5088295), (5, 4070636), (10, 2035318), (19, 1071220), (20, 1017659), (38, 535610), (76, 267805), (95, 214244), (190, 107122), (361, 56380), (380, 53561), (722, 28190), (1444, 14095), (1805, 11276), (2819, 7220), (3610, 5638)]