18886221

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{269}}^2$

素因数の和:573

約数の個数: 18

約数和(自身を含む): 28326090

約数和(自身を除く): 9439869

約数列:

[1, 3, 9, 29, 87, 261, 269, 807, 2421, 7801, 23403, 70209, 72361, 217083, 651249, 2098469, 6295407, 18886221]

約数ペア:

[(1, 18886221), (3, 6295407), (9, 2098469), (29, 651249), (87, 217083), (261, 72361), (269, 70209), (807, 23403), (2421, 7801)]