19429180

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{2447}}^1$

素因数の和:2853

約数の個数: 24

約数和(自身を含む): 40920768

約数和(自身を除く): 21491588

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 2447, 3970, 4894, 7940, 9788, 12235, 24470, 48940, 971459, 1942918, 3885836, 4857295, 9714590, 19429180]

約数ペア:

[(1, 19429180), (2, 9714590), (4, 4857295), (5, 3885836), (10, 1942918), (20, 971459), (397, 48940), (794, 24470), (1588, 12235), (1985, 9788), (2447, 7940), (3970, 4894)]