21911691

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{127}}^1\times {\mathrm{199}}^1$

素因数の和:363

約数の個数: 24

約数和(自身を含む): 31436800

約数和(自身を除く): 9525109

約数列:

[1, 3, 17, 51, 127, 199, 289, 381, 597, 867, 2159, 3383, 6477, 10149, 25273, 36703, 57511, 75819, 110109, 172533, 429641, 1288923, 7303897, 21911691]

約数ペア:

[(1, 21911691), (3, 7303897), (17, 1288923), (51, 429641), (127, 172533), (199, 110109), (289, 75819), (381, 57511), (597, 36703), (867, 25273), (2159, 10149), (3383, 6477)]