20540583

素因数分解:

$3^2\times 7^1\times {\mathrm{571}}^2$

素因数の和:1155

約数の個数: 18

約数和(自身を含む): 33967752

約数和(自身を除く): 13427169

約数列:

[1, 3, 7, 9, 21, 63, 571, 1713, 3997, 5139, 11991, 35973, 326041, 978123, 2282287, 2934369, 6846861, 20540583]

約数ペア:

[(1, 20540583), (3, 6846861), (7, 2934369), (9, 2282287), (21, 978123), (63, 326041), (571, 35973), (1713, 11991), (3997, 5139)]