21347223

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{641}}^1\times {\mathrm{653}}^1$

素因数の和:1314

約数の個数: 16

約数和(自身を含む): 30230496

約数和(自身を除く): 8883273

約数列:

[1, 3, 17, 51, 641, 653, 1923, 1959, 10897, 11101, 32691, 33303, 418573, 1255719, 7115741, 21347223]

約数ペア:

[(1, 21347223), (3, 7115741), (17, 1255719), (51, 418573), (641, 33303), (653, 32691), (1923, 11101), (1959, 10897)]