18816728

素因数分解:

$2^3\times 7^1\times {\mathrm{193}}^1\times {\mathrm{1741}}^1$

素因数の和:1947

約数の個数: 32

約数和(自身を含む): 40553760

約数和(自身を除く): 21737032

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 193, 386, 772, 1351, 1544, 1741, 2702, 3482, 5404, 6964, 10808, 12187, 13928, 24374, 48748, 97496, 336013, 672026, 1344052, 2352091, 2688104, 4704182, 9408364, 18816728]

約数ペア:

[(1, 18816728), (2, 9408364), (4, 4704182), (7, 2688104), (8, 2352091), (14, 1344052), (28, 672026), (56, 336013), (193, 97496), (386, 48748), (772, 24374), (1351, 13928), (1544, 12187), (1741, 10808), (2702, 6964), (3482, 5404)]