21925971

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15923}}^1$

素因数の和:15952

約数の個数: 20

約数和(自身を含む): 34682472

約数和(自身を除く): 12756501

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15923, 47769, 143307, 270691, 429921, 812073, 1289763, 2436219, 7308657, 21925971]

約数ペア:

[(1, 21925971), (3, 7308657), (9, 2436219), (17, 1289763), (27, 812073), (51, 429921), (81, 270691), (153, 143307), (459, 47769), (1377, 15923)]