21295263

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{28057}}^1$

素因数の和:28094

約数の個数: 16

約数和(自身を含む): 32322816

約数和(自身を除く): 11027553

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 28057, 84171, 308627, 645311, 925881, 1935933, 7098421, 21295263]

約数ペア:

[(1, 21295263), (3, 7098421), (11, 1935933), (23, 925881), (33, 645311), (69, 308627), (253, 84171), (759, 28057)]