28725819

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{859}}^1$

素因数の和:1090

約数の個数: 16

約数和(自身を含む): 39133440

約数和(自身を除く): 10407621

約数列:

[1, 3, 71, 157, 213, 471, 859, 2577, 11147, 33441, 60989, 134863, 182967, 404589, 9575273, 28725819]

約数ペア:

[(1, 28725819), (3, 9575273), (71, 404589), (157, 182967), (213, 134863), (471, 60989), (859, 33441), (2577, 11147)]