21809260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{99133}}^1$

素因数の和:99153

約数の個数: 24

約数和(自身を含む): 49963536

約数和(自身を除く): 28154276

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 99133, 198266, 396532, 495665, 991330, 1090463, 1982660, 2180926, 4361852, 5452315, 10904630, 21809260]

約数ペア:

[(1, 21809260), (2, 10904630), (4, 5452315), (5, 4361852), (10, 2180926), (11, 1982660), (20, 1090463), (22, 991330), (44, 495665), (55, 396532), (110, 198266), (220, 99133)]