16788880

素因数分解:

$2^4\times 5^1\times {\mathrm{209861}}^1$

素因数の和:209874

約数の個数: 20

約数和(自身を含む): 39034332

約数和(自身を除く): 22245452

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 209861, 419722, 839444, 1049305, 1678888, 2098610, 3357776, 4197220, 8394440, 16788880]

約数ペア:

[(1, 16788880), (2, 8394440), (4, 4197220), (5, 3357776), (8, 2098610), (10, 1678888), (16, 1049305), (20, 839444), (40, 419722), (80, 209861)]