20121856287

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{1277}}^1\times {\mathrm{404029}}^1$

素因数の和:405322

約数の個数: 16

約数和(自身を含む): 28915619040

約数和(自身を除く): 8793762753

約数列:

[1, 3, 13, 39, 1277, 3831, 16601, 49803, 404029, 1212087, 5252377, 15757131, 515945033, 1547835099, 6707285429, 20121856287]

約数ペア:

[(1, 20121856287), (3, 6707285429), (13, 1547835099), (39, 515945033), (1277, 15757131), (3831, 5252377), (16601, 1212087), (49803, 404029)]