19386980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{22543}}^1$

素因数の和:22595

約数の個数: 24

約数和(自身を含む): 41661312

約数和(自身を除く): 22274332

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 22543, 45086, 90172, 112715, 225430, 450860, 969349, 1938698, 3877396, 4846745, 9693490, 19386980]

約数ペア:

[(1, 19386980), (2, 9693490), (4, 4846745), (5, 3877396), (10, 1938698), (20, 969349), (43, 450860), (86, 225430), (172, 112715), (215, 90172), (430, 45086), (860, 22543)]