19993850

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{4493}}^1$

素因数の和:4594

約数の個数: 24

約数和(自身を含む): 37614780

約数和(自身を除く): 17620930

約数列:

[1, 2, 5, 10, 25, 50, 89, 178, 445, 890, 2225, 4450, 4493, 8986, 22465, 44930, 112325, 224650, 399877, 799754, 1999385, 3998770, 9996925, 19993850]

約数ペア:

[(1, 19993850), (2, 9996925), (5, 3998770), (10, 1999385), (25, 799754), (50, 399877), (89, 224650), (178, 112325), (445, 44930), (890, 22465), (2225, 8986), (4450, 4493)]