28927821

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{20047}}^1$

素因数の和:20100

約数の個数: 16

約数和(自身を含む): 42662144

約数和(自身を除く): 13734323

約数列:

[1, 3, 13, 37, 39, 111, 481, 1443, 20047, 60141, 260611, 741739, 781833, 2225217, 9642607, 28927821]

約数ペア:

[(1, 28927821), (3, 9642607), (13, 2225217), (37, 781833), (39, 741739), (111, 260611), (481, 60141), (1443, 20047)]