20891326

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{241}}^1\times {\mathrm{487}}^1$

素因数の和:819

約数の個数: 16

約数和(自身を含む): 31885920

約数和(自身を除く): 10994594

約数列:

[1, 2, 89, 178, 241, 482, 487, 974, 21449, 42898, 43343, 86686, 117367, 234734, 10445663, 20891326]

約数ペア:

[(1, 20891326), (2, 10445663), (89, 234734), (178, 117367), (241, 86686), (482, 43343), (487, 42898), (974, 21449)]