19910390

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{29717}}^1$

素因数の和:29791

約数の個数: 16

約数和(自身を含む): 36374832

約数和(自身を除く): 16464442

約数列:

[1, 2, 5, 10, 67, 134, 335, 670, 29717, 59434, 148585, 297170, 1991039, 3982078, 9955195, 19910390]

約数ペア:

[(1, 19910390), (2, 9955195), (5, 3982078), (10, 1991039), (67, 297170), (134, 148585), (335, 59434), (670, 29717)]