19747900

素因数分解:

$2^2\times 5^2\times {\mathrm{197479}}^1$

素因数の和:197493

約数の個数: 18

約数和(自身を含む): 42853160

約数和(自身を除く): 23105260

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 197479, 394958, 789916, 987395, 1974790, 3949580, 4936975, 9873950, 19747900]

約数ペア:

[(1, 19747900), (2, 9873950), (4, 4936975), (5, 3949580), (10, 1974790), (20, 987395), (25, 789916), (50, 394958), (100, 197479)]