21230979

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{91909}}^1$

素因数の和:91930

約数の個数: 16

約数和(自身を含む): 35293440

約数和(自身を除く): 14062461

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 91909, 275727, 643363, 1010999, 1930089, 3032997, 7076993, 21230979]

約数ペア:

[(1, 21230979), (3, 7076993), (7, 3032997), (11, 1930089), (21, 1010999), (33, 643363), (77, 275727), (231, 91909)]