21305548

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{439}}^1\times {\mathrm{1103}}^1$

素因数の和:1557

約数の個数: 24

約数和(自身を含む): 40803840

約数和(自身を除く): 19498292

約数列:

[1, 2, 4, 11, 22, 44, 439, 878, 1103, 1756, 2206, 4412, 4829, 9658, 12133, 19316, 24266, 48532, 484217, 968434, 1936868, 5326387, 10652774, 21305548]

約数ペア:

[(1, 21305548), (2, 10652774), (4, 5326387), (11, 1936868), (22, 968434), (44, 484217), (439, 48532), (878, 24266), (1103, 19316), (1756, 12133), (2206, 9658), (4412, 4829)]