19907903

素因数分解:

${\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{167}}^1$

素因数の和:334

約数の個数: 16

約数和(自身を含む): 21482496

約数和(自身を除く): 1574593

約数列:

[1, 23, 71, 73, 167, 1633, 1679, 3841, 5183, 11857, 12191, 119209, 272711, 280393, 865561, 19907903]

約数ペア:

[(1, 19907903), (23, 865561), (71, 280393), (73, 272711), (167, 119209), (1633, 12191), (1679, 11857), (3841, 5183)]