17988003

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 30476160

約数和(自身を除く): 12488157

約数列:

[1, 3, 9, 11, 19, 33, 57, 73, 99, 131, 171, 209, 219, 393, 627, 657, 803, 1179, 1387, 1441, 1881, 2409, 2489, 4161, 4323, 7227, 7467, 9563, 12483, 12969, 15257, 22401, 27379, 28689, 45771, 82137, 86067, 105193, 137313, 181697, 246411, 315579, 545091, 946737, 1635273, 1998667, 5996001, 17988003]

約数ペア:

[(1, 17988003), (3, 5996001), (9, 1998667), (11, 1635273), (19, 946737), (33, 545091), (57, 315579), (73, 246411), (99, 181697), (131, 137313), (171, 105193), (209, 86067), (219, 82137), (393, 45771), (627, 28689), (657, 27379), (803, 22401), (1179, 15257), (1387, 12969), (1441, 12483), (1881, 9563), (2409, 7467), (2489, 7227), (4161, 4323)]