19389820

素因数分解:

$2^2\times 5^1\times {\mathrm{887}}^1\times {\mathrm{1093}}^1$

素因数の和:1989

約数の個数: 24

約数和(自身を含む): 40801824

約数和(自身を除く): 21412004

約数列:

[1, 2, 4, 5, 10, 20, 887, 1093, 1774, 2186, 3548, 4372, 4435, 5465, 8870, 10930, 17740, 21860, 969491, 1938982, 3877964, 4847455, 9694910, 19389820]

約数ペア:

[(1, 19389820), (2, 9694910), (4, 4847455), (5, 3877964), (10, 1938982), (20, 969491), (887, 21860), (1093, 17740), (1774, 10930), (2186, 8870), (3548, 5465), (4372, 4435)]