18928503

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{347}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 32572800

約数和(自身を除く): 13644297

約数列:

[1, 3, 9, 11, 19, 29, 33, 57, 87, 99, 171, 209, 261, 319, 347, 551, 627, 957, 1041, 1653, 1881, 2871, 3123, 3817, 4959, 6061, 6593, 10063, 11451, 18183, 19779, 30189, 34353, 54549, 59337, 72523, 90567, 110693, 191197, 217569, 332079, 573591, 652707, 996237, 1720773, 2103167, 6309501, 18928503]

約数ペア:

[(1, 18928503), (3, 6309501), (9, 2103167), (11, 1720773), (19, 996237), (29, 652707), (33, 573591), (57, 332079), (87, 217569), (99, 191197), (171, 110693), (209, 90567), (261, 72523), (319, 59337), (347, 54549), (551, 34353), (627, 30189), (957, 19779), (1041, 18183), (1653, 11451), (1881, 10063), (2871, 6593), (3123, 6061), (3817, 4959)]