21226521

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{269}}^1\times {\mathrm{907}}^1$

素因数の和:1208

約数の個数: 16

約数和(自身を含む): 29419200

約数和(自身を除く): 8192679

約数列:

[1, 3, 29, 87, 269, 807, 907, 2721, 7801, 23403, 26303, 78909, 243983, 731949, 7075507, 21226521]

約数ペア:

[(1, 21226521), (3, 7075507), (29, 731949), (87, 243983), (269, 78909), (807, 26303), (907, 23403), (2721, 7801)]