20519810

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107999}}^1$

素因数の和:108025

約数の個数: 16

約数和(自身を含む): 38880000

約数和(自身を除く): 18360190

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 107999, 215998, 539995, 1079990, 2051981, 4103962, 10259905, 20519810]

約数ペア:

[(1, 20519810), (2, 10259905), (5, 4103962), (10, 2051981), (19, 1079990), (38, 539995), (95, 215998), (190, 107999)]