1640980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{7459}}^1$

素因数の和:7479

約数の個数: 24

約数和(自身を含む): 3759840

約数和(自身を除く): 2118860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 7459, 14918, 29836, 37295, 74590, 82049, 149180, 164098, 328196, 410245, 820490, 1640980]

約数ペア:

[(1, 1640980), (2, 820490), (4, 410245), (5, 328196), (10, 164098), (11, 149180), (20, 82049), (22, 74590), (44, 37295), (55, 29836), (110, 14918), (220, 7459)]