21669739

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{4493}}^1$

素因数の和:4566

約数の個数: 16

約数和(自身を含む): 27179712

約数和(自身を除く): 5509973

約数列:

[1, 7, 13, 53, 91, 371, 689, 4493, 4823, 31451, 58409, 238129, 408863, 1666903, 3095677, 21669739]

約数ペア:

[(1, 21669739), (7, 3095677), (13, 1666903), (53, 408863), (91, 238129), (371, 58409), (689, 31451), (4493, 4823)]