639778887

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{340127}}^1$

素因数の和:340163

約数の個数: 24

約数和(自身を含む): 1061199360

約数和(自身を除く): 421420473

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 627, 1881, 340127, 1020381, 3061143, 3741397, 6462413, 11224191, 19387239, 33672573, 58161717, 71086543, 213259629, 639778887]

約数ペア:

[(1, 639778887), (3, 213259629), (9, 71086543), (11, 58161717), (19, 33672573), (33, 19387239), (57, 11224191), (99, 6462413), (171, 3741397), (209, 3061143), (627, 1020381), (1881, 340127)]