28405221

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{701}}^1\times {\mathrm{1039}}^1$

素因数の和:1756

約数の個数: 16

約数和(自身を含む): 40884480

約数和(自身を除く): 12479259

約数列:

[1, 3, 13, 39, 701, 1039, 2103, 3117, 9113, 13507, 27339, 40521, 728339, 2185017, 9468407, 28405221]

約数ペア:

[(1, 28405221), (3, 9468407), (13, 2185017), (39, 728339), (701, 40521), (1039, 27339), (2103, 13507), (3117, 9113)]