19993753

素因数分解:

${\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{761}}^1$

素因数の和:864

約数の個数: 16

約数和(自身を含む): 22530816

約数和(自身を除く): 2537063

約数列:

[1, 13, 43, 47, 559, 611, 761, 2021, 9893, 26273, 32723, 35767, 425399, 464971, 1537981, 19993753]

約数ペア:

[(1, 19993753), (13, 1537981), (43, 464971), (47, 425399), (559, 35767), (611, 32723), (761, 26273), (2021, 9893)]