17720894

素因数分解:

$2^1\times {\mathrm{131}}^1\times {\mathrm{239}}^1\times {\mathrm{283}}^1$

素因数の和:655

約数の個数: 16

約数和(自身を含む): 26991360

約数和(自身を除く): 9270466

約数列:

[1, 2, 131, 239, 262, 283, 478, 566, 31309, 37073, 62618, 67637, 74146, 135274, 8860447, 17720894]

約数ペア:

[(1, 17720894), (2, 8860447), (131, 135274), (239, 74146), (262, 67637), (283, 62618), (478, 37073), (566, 31309)]