19990113

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2741}}^1$

素因数の和:2785

約数の個数: 32

約数和(自身を含む): 33167232

約数和(自身を除く): 13177119

約数列:

[1, 3, 11, 13, 17, 33, 39, 51, 143, 187, 221, 429, 561, 663, 2431, 2741, 7293, 8223, 30151, 35633, 46597, 90453, 106899, 139791, 391963, 512567, 605761, 1175889, 1537701, 1817283, 6663371, 19990113]

約数ペア:

[(1, 19990113), (3, 6663371), (11, 1817283), (13, 1537701), (17, 1175889), (33, 605761), (39, 512567), (51, 391963), (143, 139791), (187, 106899), (221, 90453), (429, 46597), (561, 35633), (663, 30151), (2431, 8223), (2741, 7293)]