19911606

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1009}}^1$

素因数の和:1061

約数の個数: 64

約数和(自身を含む): 48867840

約数和(自身を除く): 28956234

約数列:

[1, 2, 3, 6, 11, 13, 22, 23, 26, 33, 39, 46, 66, 69, 78, 138, 143, 253, 286, 299, 429, 506, 598, 759, 858, 897, 1009, 1518, 1794, 2018, 3027, 3289, 6054, 6578, 9867, 11099, 13117, 19734, 22198, 23207, 26234, 33297, 39351, 46414, 66594, 69621, 78702, 139242, 144287, 255277, 288574, 301691, 432861, 510554, 603382, 765831, 865722, 905073, 1531662, 1810146, 3318601, 6637202, 9955803, 19911606]

約数ペア:

[(1, 19911606), (2, 9955803), (3, 6637202), (6, 3318601), (11, 1810146), (13, 1531662), (22, 905073), (23, 865722), (26, 765831), (33, 603382), (39, 510554), (46, 432861), (66, 301691), (69, 288574), (78, 255277), (138, 144287), (143, 139242), (253, 78702), (286, 69621), (299, 66594), (429, 46414), (506, 39351), (598, 33297), (759, 26234), (858, 23207), (897, 22198), (1009, 19734), (1518, 13117), (1794, 11099), (2018, 9867), (3027, 6578), (3289, 6054)]