21609564

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{41879}}^1$

素因数の和:41929

約数の個数: 24

約数和(自身を含む): 51596160

約数和(自身を除く): 29986596

約数列:

[1, 2, 3, 4, 6, 12, 43, 86, 129, 172, 258, 516, 41879, 83758, 125637, 167516, 251274, 502548, 1800797, 3601594, 5402391, 7203188, 10804782, 21609564]

約数ペア:

[(1, 21609564), (2, 10804782), (3, 7203188), (4, 5402391), (6, 3601594), (12, 1800797), (43, 502548), (86, 251274), (129, 167516), (172, 125637), (258, 83758), (516, 41879)]