19905393

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{1787}}^1$

素因数の和:1916

約数の個数: 16

約数和(自身を含む): 27463680

約数和(自身を除く): 7558287

約数列:

[1, 3, 47, 79, 141, 237, 1787, 3713, 5361, 11139, 83989, 141173, 251967, 423519, 6635131, 19905393]

約数ペア:

[(1, 19905393), (3, 6635131), (47, 423519), (79, 251967), (141, 141173), (237, 83989), (1787, 11139), (3713, 5361)]