21700810

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{463}}^1$

素因数の和:622

約数の個数: 32

約数和(自身を含む): 40423680

約数和(自身を除く): 18722870

約数列:

[1, 2, 5, 10, 43, 86, 109, 215, 218, 430, 463, 545, 926, 1090, 2315, 4630, 4687, 9374, 19909, 23435, 39818, 46870, 50467, 99545, 100934, 199090, 252335, 504670, 2170081, 4340162, 10850405, 21700810]

約数ペア:

[(1, 21700810), (2, 10850405), (5, 4340162), (10, 2170081), (43, 504670), (86, 252335), (109, 199090), (215, 100934), (218, 99545), (430, 50467), (463, 46870), (545, 39818), (926, 23435), (1090, 19909), (2315, 9374), (4630, 4687)]