28720813

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1861}}^1$

素因数の和:1956

約数の個数: 16

約数和(自身を含む): 33247872

約数和(自身を除く): 4527059

約数列:

[1, 11, 23, 61, 253, 671, 1403, 1861, 15433, 20471, 42803, 113521, 470833, 1248731, 2610983, 28720813]

約数ペア:

[(1, 28720813), (11, 2610983), (23, 1248731), (61, 470833), (253, 113521), (671, 42803), (1403, 20471), (1861, 15433)]