20951019

素因数分解:

$3^2\times {\mathrm{43}}^2\times {\mathrm{1259}}^1$

素因数の和:1351

約数の個数: 18

約数和(自身を含む): 31007340

約数和(自身を除く): 10056321

約数列:

[1, 3, 9, 43, 129, 387, 1259, 1849, 3777, 5547, 11331, 16641, 54137, 162411, 487233, 2327891, 6983673, 20951019]

約数ペア:

[(1, 20951019), (3, 6983673), (9, 2327891), (43, 487233), (129, 162411), (387, 54137), (1259, 16641), (1849, 11331), (3777, 5547)]