678481520

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{197233}}^1$

素因数の和:197289

約数の個数: 40

約数和(自身を含む): 1614163056

約数和(自身を除く): 935681536

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 197233, 394466, 788932, 986165, 1577864, 1972330, 3155728, 3944660, 7889320, 8481019, 15778640, 16962038, 33924076, 42405095, 67848152, 84810190, 135696304, 169620380, 339240760, 678481520]

約数ペア:

[(1, 678481520), (2, 339240760), (4, 169620380), (5, 135696304), (8, 84810190), (10, 67848152), (16, 42405095), (20, 33924076), (40, 16962038), (43, 15778640), (80, 8481019), (86, 7889320), (172, 3944660), (215, 3155728), (344, 1972330), (430, 1577864), (688, 986165), (860, 788932), (1720, 394466), (3440, 197233)]