128665593

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{65881}}^1$

素因数の和:65925

約数の個数: 24

約数和(自身を含む): 219255296

約数和(自身を除く): 90589703

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 65881, 197643, 461167, 592929, 1383501, 2042311, 4150503, 6126933, 14296177, 18380799, 42888531, 128665593]

約数ペア:

[(1, 128665593), (3, 42888531), (7, 18380799), (9, 14296177), (21, 6126933), (31, 4150503), (63, 2042311), (93, 1383501), (217, 592929), (279, 461167), (651, 197643), (1953, 65881)]