21277109

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{727}}^1$

素因数の和:884

約数の個数: 16

約数和(自身を含む): 25229568

約数和(自身を除く): 3952459

約数列:

[1, 7, 37, 113, 259, 727, 791, 4181, 5089, 26899, 29267, 82151, 188293, 575057, 3039587, 21277109]

約数ペア:

[(1, 21277109), (7, 3039587), (37, 575057), (113, 188293), (259, 82151), (727, 29267), (791, 26899), (4181, 5089)]