20939187

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{1667}}^1$

素因数の和:1802

約数の個数: 16

約数和(自身を含む): 28823040

約数和(自身を除く): 7883853

約数列:

[1, 3, 53, 79, 159, 237, 1667, 4187, 5001, 12561, 88351, 131693, 265053, 395079, 6979729, 20939187]

約数ペア:

[(1, 20939187), (3, 6979729), (53, 395079), (79, 265053), (159, 131693), (237, 88351), (1667, 12561), (4187, 5001)]