18965727

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{191}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 32348160

約数和(自身を除く): 13382433

約数列:

[1, 3, 9, 11, 17, 33, 51, 59, 99, 153, 177, 187, 191, 531, 561, 573, 649, 1003, 1683, 1719, 1947, 2101, 3009, 3247, 5841, 6303, 9027, 9741, 11033, 11269, 18909, 29223, 33099, 33807, 35717, 99297, 101421, 107151, 123959, 191573, 321453, 371877, 574719, 1115631, 1724157, 2107303, 6321909, 18965727]

約数ペア:

[(1, 18965727), (3, 6321909), (9, 2107303), (11, 1724157), (17, 1115631), (33, 574719), (51, 371877), (59, 321453), (99, 191573), (153, 123959), (177, 107151), (187, 101421), (191, 99297), (531, 35717), (561, 33807), (573, 33099), (649, 29223), (1003, 18909), (1683, 11269), (1719, 11033), (1947, 9741), (2101, 9027), (3009, 6303), (3247, 5841)]