21428381

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{2063}}^1$

素因数の和:2140

約数の個数: 16

約数和(自身を含む): 24966144

約数和(自身を除く): 3537763

約数列:

[1, 13, 17, 47, 221, 611, 799, 2063, 10387, 26819, 35071, 96961, 455923, 1260493, 1648337, 21428381]

約数ペア:

[(1, 21428381), (13, 1648337), (17, 1260493), (47, 455923), (221, 96961), (611, 35071), (799, 26819), (2063, 10387)]