218511351

素因数分解:

$3^4\times {\mathrm{457}}^1\times {\mathrm{5903}}^1$

素因数の和:6372

約数の個数: 20

約数和(自身を含む): 327187872

約数和(自身を除く): 108676521

約数列:

[1, 3, 9, 27, 81, 457, 1371, 4113, 5903, 12339, 17709, 37017, 53127, 159381, 478143, 2697671, 8093013, 24279039, 72837117, 218511351]

約数ペア:

[(1, 218511351), (3, 72837117), (9, 24279039), (27, 8093013), (81, 2697671), (457, 478143), (1371, 159381), (4113, 53127), (5903, 37017), (12339, 17709)]