21680008

素因数分解:

$2^3\times 7^1\times {\mathrm{467}}^1\times {\mathrm{829}}^1$

素因数の和:1309

約数の個数: 32

約数和(自身を含む): 46612800

約数和(自身を除く): 24932792

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 467, 829, 934, 1658, 1868, 3269, 3316, 3736, 5803, 6538, 6632, 11606, 13076, 23212, 26152, 46424, 387143, 774286, 1548572, 2710001, 3097144, 5420002, 10840004, 21680008]

約数ペア:

[(1, 21680008), (2, 10840004), (4, 5420002), (7, 3097144), (8, 2710001), (14, 1548572), (28, 774286), (56, 387143), (467, 46424), (829, 26152), (934, 23212), (1658, 13076), (1868, 11606), (3269, 6632), (3316, 6538), (3736, 5803)]