21099370

素因数分解:

$2^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{15401}}^1$

素因数の和:15545

約数の個数: 16

約数和(自身を含む): 38258568

約数和(自身を除く): 17159198

約数列:

[1, 2, 5, 10, 137, 274, 685, 1370, 15401, 30802, 77005, 154010, 2109937, 4219874, 10549685, 21099370]

約数ペア:

[(1, 21099370), (2, 10549685), (5, 4219874), (10, 2109937), (137, 154010), (274, 77005), (685, 30802), (1370, 15401)]