218857540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{90437}}^1$

素因数の和:90468

約数の個数: 36

約数和(自身を含む): 505186668

約数和(自身を除く): 286329128

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 90437, 180874, 361748, 452185, 904370, 994807, 1808740, 1989614, 3979228, 4974035, 9948070, 10942877, 19896140, 21885754, 43771508, 54714385, 109428770, 218857540]

約数ペア:

[(1, 218857540), (2, 109428770), (4, 54714385), (5, 43771508), (10, 21885754), (11, 19896140), (20, 10942877), (22, 9948070), (44, 4974035), (55, 3979228), (110, 1989614), (121, 1808740), (220, 994807), (242, 904370), (484, 452185), (605, 361748), (1210, 180874), (2420, 90437)]