17801960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{40459}}^1$

素因数の和:40481

約数の個数: 32

約数和(自身を含む): 43696800

約数和(自身を除く): 25894840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 40459, 80918, 161836, 202295, 323672, 404590, 445049, 809180, 890098, 1618360, 1780196, 2225245, 3560392, 4450490, 8900980, 17801960]

約数ペア:

[(1, 17801960), (2, 8900980), (4, 4450490), (5, 3560392), (8, 2225245), (10, 1780196), (11, 1618360), (20, 890098), (22, 809180), (40, 445049), (44, 404590), (55, 323672), (88, 202295), (110, 161836), (220, 80918), (440, 40459)]