20457770

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^2\times {\mathrm{1217}}^1$

素因数の和:1306

約数の個数: 24

約数和(自身を含む): 37775052

約数和(自身を除く): 17317282

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 1217, 1681, 2434, 3362, 6085, 8405, 12170, 16810, 49897, 99794, 249485, 498970, 2045777, 4091554, 10228885, 20457770]

約数ペア:

[(1, 20457770), (2, 10228885), (5, 4091554), (10, 2045777), (41, 498970), (82, 249485), (205, 99794), (410, 49897), (1217, 16810), (1681, 12170), (2434, 8405), (3362, 6085)]