21619221

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{1129}}^1$

素因数の和:1636

約数の個数: 16

約数和(自身を含む): 31133760

約数和(自身を除く): 9514539

約数列:

[1, 3, 13, 39, 491, 1129, 1473, 3387, 6383, 14677, 19149, 44031, 554339, 1663017, 7206407, 21619221]

約数ペア:

[(1, 21619221), (3, 7206407), (13, 1663017), (39, 554339), (491, 44031), (1129, 19149), (1473, 14677), (3387, 6383)]