21145564

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{4409}}^1$

素因数の和:4533

約数の個数: 24

約数和(自身を含む): 40748400

約数和(自身を除く): 19602836

約数列:

[1, 2, 4, 11, 22, 44, 109, 218, 436, 1199, 2398, 4409, 4796, 8818, 17636, 48499, 96998, 193996, 480581, 961162, 1922324, 5286391, 10572782, 21145564]

約数ペア:

[(1, 21145564), (2, 10572782), (4, 5286391), (11, 1922324), (22, 961162), (44, 480581), (109, 193996), (218, 96998), (436, 48499), (1199, 17636), (2398, 8818), (4409, 4796)]