9981008

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{20123}}^1$

素因数の和:20162

約数の個数: 20

約数和(自身を含む): 19963008

約数和(自身を除く): 9982000

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 20123, 40246, 80492, 160984, 321968, 623813, 1247626, 2495252, 4990504, 9981008]

約数ペア:

[(1, 9981008), (2, 4990504), (4, 2495252), (8, 1247626), (16, 623813), (31, 321968), (62, 160984), (124, 80492), (248, 40246), (496, 20123)]