21222908

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{17627}}^1$

素因数の和:17681

約数の個数: 24

約数和(自身を含む): 43435392

約数和(自身を除く): 22212484

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 17627, 35254, 70508, 123389, 246778, 493556, 757961, 1515922, 3031844, 5305727, 10611454, 21222908]

約数ペア:

[(1, 21222908), (2, 10611454), (4, 5305727), (7, 3031844), (14, 1515922), (28, 757961), (43, 493556), (86, 246778), (172, 123389), (301, 70508), (602, 35254), (1204, 17627)]