21119481

素因数分解:

$3^3\times {\mathrm{61}}^1\times {\mathrm{12823}}^1$

素因数の和:12893

約数の個数: 16

約数和(自身を含む): 31803520

約数和(自身を除く): 10684039

約数列:

[1, 3, 9, 27, 61, 183, 549, 1647, 12823, 38469, 115407, 346221, 782203, 2346609, 7039827, 21119481]

約数ペア:

[(1, 21119481), (3, 7039827), (9, 2346609), (27, 782203), (61, 346221), (183, 115407), (549, 38469), (1647, 12823)]