21417891

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{6691}}^1$

素因数の和:6802

約数の個数: 16

約数和(自身を含む): 31479168

約数和(自身を除く): 10061277

約数列:

[1, 3, 11, 33, 97, 291, 1067, 3201, 6691, 20073, 73601, 220803, 649027, 1947081, 7139297, 21417891]

約数ペア:

[(1, 21417891), (3, 7139297), (11, 1947081), (33, 649027), (97, 220803), (291, 73601), (1067, 20073), (3201, 6691)]