19781794

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{2161}}^1$

素因数の和:2385

約数の個数: 16

約数和(自身を含む): 31132800

約数和(自身を除く): 11351006

約数列:

[1, 2, 23, 46, 199, 398, 2161, 4322, 4577, 9154, 49703, 99406, 430039, 860078, 9890897, 19781794]

約数ペア:

[(1, 19781794), (2, 9890897), (23, 860078), (46, 430039), (199, 99406), (398, 49703), (2161, 9154), (4322, 4577)]