20191690

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28439}}^1$

素因数の和:28517

約数の個数: 16

約数和(自身を含む): 36858240

約数和(自身を除く): 16666550

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 28439, 56878, 142195, 284390, 2019169, 4038338, 10095845, 20191690]

約数ペア:

[(1, 20191690), (2, 10095845), (5, 4038338), (10, 2019169), (71, 284390), (142, 142195), (355, 56878), (710, 28439)]