20906156

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{1979}}^1$

素因数の和:2141

約数の個数: 24

約数和(自身を含む): 38808000

約数和(自身を除く): 17901844

約数列:

[1, 2, 4, 19, 38, 76, 139, 278, 556, 1979, 2641, 3958, 5282, 7916, 10564, 37601, 75202, 150404, 275081, 550162, 1100324, 5226539, 10453078, 20906156]

約数ペア:

[(1, 20906156), (2, 10453078), (4, 5226539), (19, 1100324), (38, 550162), (76, 275081), (139, 150404), (278, 75202), (556, 37601), (1979, 10564), (2641, 7916), (3958, 5282)]