21274883991

素因数分解:

$3^2\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{409897}}^1$

素因数の和:410055

約数の個数: 24

約数和(自身を含む): 31545750080

約数和(自身を除く): 10270866089

約数列:

[1, 3, 9, 73, 79, 219, 237, 657, 711, 5767, 17301, 51903, 409897, 1229691, 3689073, 29922481, 32381863, 89767443, 97145589, 269302329, 291436767, 2363875999, 7091627997, 21274883991]

約数ペア:

[(1, 21274883991), (3, 7091627997), (9, 2363875999), (73, 291436767), (79, 269302329), (219, 97145589), (237, 89767443), (657, 32381863), (711, 29922481), (5767, 3689073), (17301, 1229691), (51903, 409897)]