21512006

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1\times {\mathrm{769}}^1$

素因数の和:1039

約数の個数: 16

約数和(自身を含む): 32931360

約数和(自身を除く): 11419354

約数列:

[1, 2, 71, 142, 197, 394, 769, 1538, 13987, 27974, 54599, 109198, 151493, 302986, 10756003, 21512006]

約数ペア:

[(1, 21512006), (2, 10756003), (71, 302986), (142, 151493), (197, 109198), (394, 54599), (769, 27974), (1538, 13987)]