20684741

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{353}}^1\times {\mathrm{761}}^1$

素因数の和:1132

約数の個数: 16

約数和(自身を含む): 25895808

約数和(自身を除く): 5211067

約数列:

[1, 7, 11, 77, 353, 761, 2471, 3883, 5327, 8371, 27181, 58597, 268633, 1880431, 2954963, 20684741]

約数ペア:

[(1, 20684741), (7, 2954963), (11, 1880431), (77, 268633), (353, 58597), (761, 27181), (2471, 8371), (3883, 5327)]