19394780

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{2371}}^1$

素因数の和:2789

約数の個数: 24

約数和(自身を含む): 40845840

約数和(自身を除く): 21451060

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 2371, 4090, 4742, 8180, 9484, 11855, 23710, 47420, 969739, 1939478, 3878956, 4848695, 9697390, 19394780]

約数ペア:

[(1, 19394780), (2, 9697390), (4, 4848695), (5, 3878956), (10, 1939478), (20, 969739), (409, 47420), (818, 23710), (1636, 11855), (2045, 9484), (2371, 8180), (4090, 4742)]