21191548

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{16103}}^1$

素因数の和:16161

約数の個数: 24

約数和(自身を含む): 43287552

約数和(自身を除く): 22096004

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 16103, 32206, 64412, 112721, 225442, 450884, 756841, 1513682, 3027364, 5297887, 10595774, 21191548]

約数ペア:

[(1, 21191548), (2, 10595774), (4, 5297887), (7, 3027364), (14, 1513682), (28, 756841), (47, 450884), (94, 225442), (188, 112721), (329, 64412), (658, 32206), (1316, 16103)]