20555556

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{2287}}^1$

素因数の和:2408

約数の個数: 48

約数和(自身を含む): 55351296

約数和(自身を除く): 34795740

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 107, 214, 321, 428, 642, 749, 1284, 1498, 2247, 2287, 2996, 4494, 4574, 6861, 8988, 9148, 13722, 16009, 27444, 32018, 48027, 64036, 96054, 192108, 244709, 489418, 734127, 978836, 1468254, 1712963, 2936508, 3425926, 5138889, 6851852, 10277778, 20555556]

約数ペア:

[(1, 20555556), (2, 10277778), (3, 6851852), (4, 5138889), (6, 3425926), (7, 2936508), (12, 1712963), (14, 1468254), (21, 978836), (28, 734127), (42, 489418), (84, 244709), (107, 192108), (214, 96054), (321, 64036), (428, 48027), (642, 32018), (749, 27444), (1284, 16009), (1498, 13722), (2247, 9148), (2287, 8988), (2996, 6861), (4494, 4574)]