21270321

素因数分解:

$3^2\times {\mathrm{571}}^1\times {\mathrm{4139}}^1$

素因数の和:4716

約数の個数: 12

約数和(自身を含む): 30785040

約数和(自身を除く): 9514719

約数列:

[1, 3, 9, 571, 1713, 4139, 5139, 12417, 37251, 2363369, 7090107, 21270321]

約数ペア:

[(1, 21270321), (3, 7090107), (9, 2363369), (571, 37251), (1713, 12417), (4139, 5139)]