21256706

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{13009}}^1$

素因数の和:13073

約数の個数: 16

約数和(自身を含む): 34346400

約数和(自身を除く): 13089694

約数列:

[1, 2, 19, 38, 43, 86, 817, 1634, 13009, 26018, 247171, 494342, 559387, 1118774, 10628353, 21256706]

約数ペア:

[(1, 21256706), (2, 10628353), (19, 1118774), (38, 559387), (43, 494342), (86, 247171), (817, 26018), (1634, 13009)]