20516390

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107981}}^1$

素因数の和:108007

約数の個数: 16

約数和(自身を含む): 38873520

約数和(自身を除く): 18357130

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 107981, 215962, 539905, 1079810, 2051639, 4103278, 10258195, 20516390]

約数ペア:

[(1, 20516390), (2, 10258195), (5, 4103278), (10, 2051639), (19, 1079810), (38, 539905), (95, 215962), (190, 107981)]