19129780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{569}}^1$

素因数の和:660

約数の個数: 36

約数和(自身を含む): 41248620

約数和(自身を除く): 22118840

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 569, 820, 1138, 1681, 2276, 2845, 3362, 5690, 6724, 8405, 11380, 16810, 23329, 33620, 46658, 93316, 116645, 233290, 466580, 956489, 1912978, 3825956, 4782445, 9564890, 19129780]

約数ペア:

[(1, 19129780), (2, 9564890), (4, 4782445), (5, 3825956), (10, 1912978), (20, 956489), (41, 466580), (82, 233290), (164, 116645), (205, 93316), (410, 46658), (569, 33620), (820, 23329), (1138, 16810), (1681, 11380), (2276, 8405), (2845, 6724), (3362, 5690)]