20781324

素因数分解:

$2^2\times 3^2\times {\mathrm{577259}}^1$

素因数の和:577269

約数の個数: 18

約数和(自身を含む): 52530660

約数和(自身を除く): 31749336

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 577259, 1154518, 1731777, 2309036, 3463554, 5195331, 6927108, 10390662, 20781324]

約数ペア:

[(1, 20781324), (2, 10390662), (3, 6927108), (4, 5195331), (6, 3463554), (9, 2309036), (12, 1731777), (18, 1154518), (36, 577259)]