21007664

素因数分解:

$2^4\times {\mathrm{193}}^1\times {\mathrm{6803}}^1$

素因数の和:7004

約数の個数: 20

約数和(自身を含む): 40919256

約数和(自身を除く): 19911592

約数列:

[1, 2, 4, 8, 16, 193, 386, 772, 1544, 3088, 6803, 13606, 27212, 54424, 108848, 1312979, 2625958, 5251916, 10503832, 21007664]

約数ペア:

[(1, 21007664), (2, 10503832), (4, 5251916), (8, 2625958), (16, 1312979), (193, 108848), (386, 54424), (772, 27212), (1544, 13606), (3088, 6803)]