18228580

素因数分解:

$2^2\times 5^1\times {\mathrm{691}}^1\times {\mathrm{1319}}^1$

素因数の和:2019

約数の個数: 24

約数和(自身を含む): 38364480

約数和(自身を除く): 20135900

約数列:

[1, 2, 4, 5, 10, 20, 691, 1319, 1382, 2638, 2764, 3455, 5276, 6595, 6910, 13190, 13820, 26380, 911429, 1822858, 3645716, 4557145, 9114290, 18228580]

約数ペア:

[(1, 18228580), (2, 9114290), (4, 4557145), (5, 3645716), (10, 1822858), (20, 911429), (691, 26380), (1319, 13820), (1382, 13190), (2638, 6910), (2764, 6595), (3455, 5276)]