19911064

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{57881}}^1$

素因数の和:57930

約数の個数: 16

約数和(自身を含む): 38202120

約数和(自身を除く): 18291056

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 57881, 115762, 231524, 463048, 2488883, 4977766, 9955532, 19911064]

約数ペア:

[(1, 19911064), (2, 9955532), (4, 4977766), (8, 2488883), (43, 463048), (86, 231524), (172, 115762), (344, 57881)]