20816873

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{661}}^1$

素因数の和:1088

約数の個数: 16

約数和(自身を含む): 26056320

約数和(自身を除く): 5239447

約数列:

[1, 7, 11, 77, 409, 661, 2863, 4499, 4627, 7271, 31493, 50897, 270349, 1892443, 2973839, 20816873]

約数ペア:

[(1, 20816873), (7, 2973839), (11, 1892443), (77, 270349), (409, 50897), (661, 31493), (2863, 7271), (4499, 4627)]