21135573

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15349}}^1$

素因数の和:15378

約数の個数: 20

約数和(自身を含む): 33432300

約数和(自身を除く): 12296727

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15349, 46047, 138141, 260933, 414423, 782799, 1243269, 2348397, 7045191, 21135573]

約数ペア:

[(1, 21135573), (3, 7045191), (9, 2348397), (17, 1243269), (27, 782799), (51, 414423), (81, 260933), (153, 138141), (459, 46047), (1377, 15349)]