19180007

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{1117}}^1$

素因数の和:1358

約数の個数: 16

約数和(自身を含む): 24041472

約数和(自身を除く): 4861465

約数列:

[1, 7, 11, 77, 223, 1117, 1561, 2453, 7819, 12287, 17171, 86009, 249091, 1743637, 2740001, 19180007]

約数ペア:

[(1, 19180007), (7, 2740001), (11, 1743637), (77, 249091), (223, 86009), (1117, 17171), (1561, 12287), (2453, 7819)]