9861820

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2503}}^1$

素因数の和:2709

約数の個数: 24

約数和(自身を含む): 20823264

約数和(自身を除く): 10961444

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 2503, 3940, 5006, 10012, 12515, 25030, 50060, 493091, 986182, 1972364, 2465455, 4930910, 9861820]

約数ペア:

[(1, 9861820), (2, 4930910), (4, 2465455), (5, 1972364), (10, 986182), (20, 493091), (197, 50060), (394, 25030), (788, 12515), (985, 10012), (1970, 5006), (2503, 3940)]