28662280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{17477}}^1$

素因数の和:17529

約数の個数: 32

約数和(自身を含む): 66066840

約数和(自身を除く): 37404560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 17477, 34954, 69908, 87385, 139816, 174770, 349540, 699080, 716557, 1433114, 2866228, 3582785, 5732456, 7165570, 14331140, 28662280]

約数ペア:

[(1, 28662280), (2, 14331140), (4, 7165570), (5, 5732456), (8, 3582785), (10, 2866228), (20, 1433114), (40, 716557), (41, 699080), (82, 349540), (164, 174770), (205, 139816), (328, 87385), (410, 69908), (820, 34954), (1640, 17477)]