21997916

素因数分解:

$2^2\times {\mathrm{103}}^1\times {\mathrm{107}}^1\times {\mathrm{499}}^1$

素因数の和:713

約数の個数: 24

約数和(自身を含む): 39312000

約数和(自身を除く): 17314084

約数列:

[1, 2, 4, 103, 107, 206, 214, 412, 428, 499, 998, 1996, 11021, 22042, 44084, 51397, 53393, 102794, 106786, 205588, 213572, 5499479, 10998958, 21997916]

約数ペア:

[(1, 21997916), (2, 10998958), (4, 5499479), (103, 213572), (107, 205588), (206, 106786), (214, 102794), (412, 53393), (428, 51397), (499, 44084), (998, 22042), (1996, 11021)]