21516297

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{257}}^1$

素因数の和:373

約数の個数: 32

約数和(自身を含む): 32693760

約数和(自身を除く): 11177463

約数列:

[1, 3, 11, 33, 43, 59, 129, 177, 257, 473, 649, 771, 1419, 1947, 2537, 2827, 7611, 8481, 11051, 15163, 27907, 33153, 45489, 83721, 121561, 166793, 364683, 500379, 652009, 1956027, 7172099, 21516297]

約数ペア:

[(1, 21516297), (3, 7172099), (11, 1956027), (33, 652009), (43, 500379), (59, 364683), (129, 166793), (177, 121561), (257, 83721), (473, 45489), (649, 33153), (771, 27907), (1419, 15163), (1947, 11051), (2537, 8481), (2827, 7611)]