19915493

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1549}}^1$

素因数の和:1628

約数の個数: 16

約数和(自身を含む): 22915200

約数和(自身を除く): 2999707

約数列:

[1, 13, 23, 43, 299, 559, 989, 1549, 12857, 20137, 35627, 66607, 463151, 865891, 1531961, 19915493]

約数ペア:

[(1, 19915493), (13, 1531961), (23, 865891), (43, 463151), (299, 66607), (559, 35627), (989, 20137), (1549, 12857)]