19639180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89269}}^1$

素因数の和:89289

約数の個数: 24

約数和(自身を含む): 44992080

約数和(自身を除く): 25352900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 89269, 178538, 357076, 446345, 892690, 981959, 1785380, 1963918, 3927836, 4909795, 9819590, 19639180]

約数ペア:

[(1, 19639180), (2, 9819590), (4, 4909795), (5, 3927836), (10, 1963918), (11, 1785380), (20, 981959), (22, 892690), (44, 446345), (55, 357076), (110, 178538), (220, 89269)]