21088904

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{20123}}^1$

素因数の和:20260

約数の個数: 16

約数和(自身を含む): 39845520

約数和(自身を除く): 18756616

約数列:

[1, 2, 4, 8, 131, 262, 524, 1048, 20123, 40246, 80492, 160984, 2636113, 5272226, 10544452, 21088904]

約数ペア:

[(1, 21088904), (2, 10544452), (4, 5272226), (8, 2636113), (131, 160984), (262, 80492), (524, 40246), (1048, 20123)]