12856785

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{643}}^1$

素因数の和:725

約数の個数: 32

約数和(自身を含む): 21762048

約数和(自身を除く): 8905263

約数列:

[1, 3, 5, 15, 31, 43, 93, 129, 155, 215, 465, 643, 645, 1333, 1929, 3215, 3999, 6665, 9645, 19933, 19995, 27649, 59799, 82947, 99665, 138245, 298995, 414735, 857119, 2571357, 4285595, 12856785]

約数ペア:

[(1, 12856785), (3, 4285595), (5, 2571357), (15, 857119), (31, 414735), (43, 298995), (93, 138245), (129, 99665), (155, 82947), (215, 59799), (465, 27649), (643, 19995), (645, 19933), (1333, 9645), (1929, 6665), (3215, 3999)]