20964349

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:325

約数の個数: 24

約数和(自身を含む): 26151488

約数和(自身を除く): 5187139

約数列:

[1, 7, 17, 43, 119, 241, 289, 301, 731, 1687, 2023, 4097, 5117, 10363, 12427, 28679, 69649, 72541, 86989, 176171, 487543, 1233197, 2994907, 20964349]

約数ペア:

[(1, 20964349), (7, 2994907), (17, 1233197), (43, 487543), (119, 176171), (241, 86989), (289, 72541), (301, 69649), (731, 28679), (1687, 12427), (2023, 10363), (4097, 5117)]