19805420

素因数分解:

$2^2\times 5^1\times {\mathrm{433}}^1\times {\mathrm{2287}}^1$

素因数の和:2729

約数の個数: 24

約数和(自身を含む): 41705664

約数和(自身を除く): 21900244

約数列:

[1, 2, 4, 5, 10, 20, 433, 866, 1732, 2165, 2287, 4330, 4574, 8660, 9148, 11435, 22870, 45740, 990271, 1980542, 3961084, 4951355, 9902710, 19805420]

約数ペア:

[(1, 19805420), (2, 9902710), (4, 4951355), (5, 3961084), (10, 1980542), (20, 990271), (433, 45740), (866, 22870), (1732, 11435), (2165, 9148), (2287, 8660), (4330, 4574)]