19990055

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{853}}^1$

素因数の和:1010

約数の個数: 16

約数和(自身を含む): 24800160

約数和(自身を除く): 4810105

約数列:

[1, 5, 43, 109, 215, 545, 853, 4265, 4687, 23435, 36679, 92977, 183395, 464885, 3998011, 19990055]

約数ペア:

[(1, 19990055), (5, 3998011), (43, 464885), (109, 183395), (215, 92977), (545, 36679), (853, 23435), (4265, 4687)]