19407940

素因数分解:

$2^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{2749}}^1$

素因数の和:3111

約数の個数: 24

約数和(自身を含む): 40887000

約数和(自身を除く): 21479060

約数列:

[1, 2, 4, 5, 10, 20, 353, 706, 1412, 1765, 2749, 3530, 5498, 7060, 10996, 13745, 27490, 54980, 970397, 1940794, 3881588, 4851985, 9703970, 19407940]

約数ペア:

[(1, 19407940), (2, 9703970), (4, 4851985), (5, 3881588), (10, 1940794), (20, 970397), (353, 54980), (706, 27490), (1412, 13745), (1765, 10996), (2749, 7060), (3530, 5498)]