28381281

素因数分解:

$3^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1\times {\mathrm{281}}^1$

素因数の和:672

約数の個数: 16

約数和(自身を含む): 38415168

約数和(自身を除く): 10033887

約数列:

[1, 3, 131, 257, 281, 393, 771, 843, 33667, 36811, 72217, 101001, 110433, 216651, 9460427, 28381281]

約数ペア:

[(1, 28381281), (3, 9460427), (131, 216651), (257, 110433), (281, 101001), (393, 72217), (771, 36811), (843, 33667)]