21356612

素因数分解:

$2^2\times {\mathrm{47}}^2\times {\mathrm{2417}}^1$

素因数の和:2515

約数の個数: 18

約数和(自身を含む): 38201982

約数和(自身を除く): 16845370

約数列:

[1, 2, 4, 47, 94, 188, 2209, 2417, 4418, 4834, 8836, 9668, 113599, 227198, 454396, 5339153, 10678306, 21356612]

約数ペア:

[(1, 21356612), (2, 10678306), (4, 5339153), (47, 454396), (94, 227198), (188, 113599), (2209, 9668), (2417, 8836), (4418, 4834)]