28405255683

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71191117}}^1$

素因数の和:71191146

約数の個数: 16

約数和(自身を含む): 45562315520

約数和(自身を除く): 17157059837

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 71191117, 213573351, 498337819, 1352631223, 1495013457, 4057893669, 9468418561, 28405255683]

約数ペア:

[(1, 28405255683), (3, 9468418561), (7, 4057893669), (19, 1495013457), (21, 1352631223), (57, 498337819), (133, 213573351), (399, 71191117)]