20907887

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{20887}}^1$

素因数の和:20918

約数の個数: 16

約数和(自身を含む): 28073472

約数和(自身を除く): 7165585

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 20887, 146209, 229757, 271531, 1608299, 1900717, 2986841, 20907887]

約数ペア:

[(1, 20907887), (7, 2986841), (11, 1900717), (13, 1608299), (77, 271531), (91, 229757), (143, 146209), (1001, 20887)]