21409184

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{15559}}^1$

素因数の和:15612

約数の個数: 24

約数和(自身を含む): 43132320

約数和(自身を除く): 21723136

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 172, 344, 688, 1376, 15559, 31118, 62236, 124472, 248944, 497888, 669037, 1338074, 2676148, 5352296, 10704592, 21409184]

約数ペア:

[(1, 21409184), (2, 10704592), (4, 5352296), (8, 2676148), (16, 1338074), (32, 669037), (43, 497888), (86, 248944), (172, 124472), (344, 62236), (688, 31118), (1376, 15559)]