21498323

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^2\times {\mathrm{151}}^1$

素因数の和:255

約数の個数: 24

約数和(自身を含む): 27622656

約数和(自身を除く): 6124333

約数列:

[1, 7, 11, 43, 77, 151, 301, 473, 1057, 1661, 1849, 3311, 6493, 11627, 12943, 20339, 45451, 71423, 142373, 279199, 499961, 1954393, 3071189, 21498323]

約数ペア:

[(1, 21498323), (7, 3071189), (11, 1954393), (43, 499961), (77, 279199), (151, 142373), (301, 71423), (473, 45451), (1057, 20339), (1661, 12943), (1849, 11627), (3311, 6493)]