19720190

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{281717}}^1$

素因数の和:281731

約数の個数: 16

約数和(自身を含む): 40567392

約数和(自身を除く): 20847202

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 281717, 563434, 1408585, 1972019, 2817170, 3944038, 9860095, 19720190]

約数ペア:

[(1, 19720190), (2, 9860095), (5, 3944038), (7, 2817170), (10, 1972019), (14, 1408585), (35, 563434), (70, 281717)]