21068990

素因数分解:

$2^1\times 5^1\times {\mathrm{941}}^1\times {\mathrm{2239}}^1$

素因数の和:3187

約数の個数: 16

約数和(自身を含む): 37981440

約数和(自身を除く): 16912450

約数列:

[1, 2, 5, 10, 941, 1882, 2239, 4478, 4705, 9410, 11195, 22390, 2106899, 4213798, 10534495, 21068990]

約数ペア:

[(1, 21068990), (2, 10534495), (5, 4213798), (10, 2106899), (941, 22390), (1882, 11195), (2239, 9410), (4478, 4705)]