20745309

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{2521}}^1$

素因数の和:2748

約数の個数: 16

約数和(自身を含む): 29941184

約数和(自身を除く): 9195875

約数列:

[1, 3, 13, 39, 211, 633, 2521, 2743, 7563, 8229, 32773, 98319, 531931, 1595793, 6915103, 20745309]

約数ペア:

[(1, 20745309), (3, 6915103), (13, 1595793), (39, 531931), (211, 98319), (633, 32773), (2521, 8229), (2743, 7563)]