20091861

素因数分解:

$3^3\times {\mathrm{109}}^1\times {\mathrm{6827}}^1$

素因数の和:6945

約数の個数: 16

約数和(自身を含む): 30043200

約数和(自身を除く): 9951339

約数列:

[1, 3, 9, 27, 109, 327, 981, 2943, 6827, 20481, 61443, 184329, 744143, 2232429, 6697287, 20091861]

約数ペア:

[(1, 20091861), (3, 6697287), (9, 2232429), (27, 744143), (109, 184329), (327, 61443), (981, 20481), (2943, 6827)]