21194919

素因数分解:

$3^3\times {\mathrm{181}}^1\times {\mathrm{4337}}^1$

素因数の和:4527

約数の個数: 16

約数和(自身を含む): 31580640

約数和(自身を除く): 10385721

約数列:

[1, 3, 9, 27, 181, 543, 1629, 4337, 4887, 13011, 39033, 117099, 784997, 2354991, 7064973, 21194919]

約数ペア:

[(1, 21194919), (3, 7064973), (9, 2354991), (27, 784997), (181, 117099), (543, 39033), (1629, 13011), (4337, 4887)]