19689860

素因数分解:

$2^2\times 5^1\times {\mathrm{193}}^1\times {\mathrm{5101}}^1$

素因数の和:5303

約数の個数: 24

約数和(自身を含む): 41571096

約数和(自身を除く): 21881236

約数列:

[1, 2, 4, 5, 10, 20, 193, 386, 772, 965, 1930, 3860, 5101, 10202, 20404, 25505, 51010, 102020, 984493, 1968986, 3937972, 4922465, 9844930, 19689860]

約数ペア:

[(1, 19689860), (2, 9844930), (4, 4922465), (5, 3937972), (10, 1968986), (20, 984493), (193, 102020), (386, 51010), (772, 25505), (965, 20404), (1930, 10202), (3860, 5101)]