21605427

素因数分解:

$3^3\times {\mathrm{181}}^1\times {\mathrm{4421}}^1$

素因数の和:4611

約数の個数: 16

約数和(自身を含む): 32192160

約数和(自身を除く): 10586733

約数列:

[1, 3, 9, 27, 181, 543, 1629, 4421, 4887, 13263, 39789, 119367, 800201, 2400603, 7201809, 21605427]

約数ペア:

[(1, 21605427), (3, 7201809), (9, 2400603), (27, 800201), (181, 119367), (543, 39789), (1629, 13263), (4421, 4887)]