12667221

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{3001}}^1$

素因数の和:3081

約数の個数: 24

約数和(自身を含む): 21230144

約数和(自身を除く): 8562923

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 469, 603, 1407, 3001, 4221, 9003, 21007, 27009, 63021, 189063, 201067, 603201, 1407469, 1809603, 4222407, 12667221]

約数ペア:

[(1, 12667221), (3, 4222407), (7, 1809603), (9, 1407469), (21, 603201), (63, 201067), (67, 189063), (201, 63021), (469, 27009), (603, 21007), (1407, 9003), (3001, 4221)]