78895280

素因数分解:

$2^4\times 5^1\times {\mathrm{986191}}^1$

素因数の和:986204

約数の個数: 20

約数和(自身を含む): 183431712

約数和(自身を除く): 104536432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 986191, 1972382, 3944764, 4930955, 7889528, 9861910, 15779056, 19723820, 39447640, 78895280]

約数ペア:

[(1, 78895280), (2, 39447640), (4, 19723820), (5, 15779056), (8, 9861910), (10, 7889528), (16, 4930955), (20, 3944764), (40, 1972382), (80, 986191)]