28208219

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{1171}}^1$

素因数の和:1310

約数の個数: 16

約数和(自身を含む): 32487840

約数和(自身を除く): 4279621

約数列:

[1, 13, 17, 109, 221, 1171, 1417, 1853, 15223, 19907, 24089, 127639, 258791, 1659307, 2169863, 28208219]

約数ペア:

[(1, 28208219), (13, 2169863), (17, 1659307), (109, 258791), (221, 127639), (1171, 24089), (1417, 19907), (1853, 15223)]