21090032

素因数分解:

$2^4\times {\mathrm{197}}^1\times {\mathrm{6691}}^1$

素因数の和:6896

約数の個数: 20

約数和(自身を含む): 41075496

約数和(自身を除く): 19985464

約数列:

[1, 2, 4, 8, 16, 197, 394, 788, 1576, 3152, 6691, 13382, 26764, 53528, 107056, 1318127, 2636254, 5272508, 10545016, 21090032]

約数ペア:

[(1, 21090032), (2, 10545016), (4, 5272508), (8, 2636254), (16, 1318127), (197, 107056), (394, 53528), (788, 26764), (1576, 13382), (3152, 6691)]