19911584

素因数分解:

$2^5\times 7^1\times {\mathrm{11}}^1\times {\mathrm{8081}}^1$

素因数の和:8109

約数の個数: 48

約数和(自身を含む): 48879936

約数和(自身を除く): 28968352

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 77, 88, 112, 154, 176, 224, 308, 352, 616, 1232, 2464, 8081, 16162, 32324, 56567, 64648, 88891, 113134, 129296, 177782, 226268, 258592, 355564, 452536, 622237, 711128, 905072, 1244474, 1422256, 1810144, 2488948, 2844512, 4977896, 9955792, 19911584]

約数ペア:

[(1, 19911584), (2, 9955792), (4, 4977896), (7, 2844512), (8, 2488948), (11, 1810144), (14, 1422256), (16, 1244474), (22, 905072), (28, 711128), (32, 622237), (44, 452536), (56, 355564), (77, 258592), (88, 226268), (112, 177782), (154, 129296), (176, 113134), (224, 88891), (308, 64648), (352, 56567), (616, 32324), (1232, 16162), (2464, 8081)]