21111423

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{2137}}^1$

素因数の和:2266

約数の個数: 16

約数和(自身を含む): 29247840

約数和(自身を除く): 8136417

約数列:

[1, 3, 37, 89, 111, 267, 2137, 3293, 6411, 9879, 79069, 190193, 237207, 570579, 7037141, 21111423]

約数ペア:

[(1, 21111423), (3, 7037141), (37, 570579), (89, 237207), (111, 190193), (267, 79069), (2137, 9879), (3293, 6411)]