27720021

素因数分解:

$3^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{6911}}^1$

素因数の和:7112

約数の個数: 16

約数和(自身を含む): 42467328

約数和(自身を除く): 14747307

約数列:

[1, 3, 7, 21, 191, 573, 1337, 4011, 6911, 20733, 48377, 145131, 1320001, 3960003, 9240007, 27720021]

約数ペア:

[(1, 27720021), (3, 9240007), (7, 3960003), (21, 1320001), (191, 145131), (573, 48377), (1337, 20733), (4011, 6911)]