20801656

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{1279}}^1$

素因数の和:1411

約数の個数: 32

約数和(自身を含む): 41472000

約数和(自身を除く): 20670344

約数列:

[1, 2, 4, 8, 19, 38, 76, 107, 152, 214, 428, 856, 1279, 2033, 2558, 4066, 5116, 8132, 10232, 16264, 24301, 48602, 97204, 136853, 194408, 273706, 547412, 1094824, 2600207, 5200414, 10400828, 20801656]

約数ペア:

[(1, 20801656), (2, 10400828), (4, 5200414), (8, 2600207), (19, 1094824), (38, 547412), (76, 273706), (107, 194408), (152, 136853), (214, 97204), (428, 48602), (856, 24301), (1279, 16264), (2033, 10232), (2558, 8132), (4066, 5116)]